Malaise Health Dictionary

Malaise: From 4 Different Sources


A vague feeling of being unwell.
Health Source: BMA Medical Dictionary
Author: The British Medical Association
A fretful and low energy state, often considered an early sign of infection or low fever. Ask someone with Chronic Fatigue Syndrome or Multiple Chemical Sensitivities...they’ll tell you how it feels.
Health Source: Herbal Medical
Author: Health Dictionary
A vague feeling of feverishness, listlessness and languor, malaise sometimes precedes the onset of serious acute diseases, but more commonly accompanies passing illnesses such as DYSPEPSIA, chills and colds.
Health Source: Medical Dictionary
Author: Health Dictionary
n. a general feeling of being unwell. The feeling may be accompanied by identifiable physical discomfort and may indicate the presence of disease.
Health Source: Oxford | Concise Colour Medical Dictionary
Author: Jonathan Law, Elizabeth Martin

Erysipelas

A streptococcal infection (see STREPTOCOCCUS) of the skin characterised by an acute onset with fever, malaise and a striking, usually unilateral, rash (see ERUPTION) almost always on a lower leg or the face. Shivering, local pain and tenderness are associated with a sharply de?ned, spreading, bright red swollen zone of skin in?ammation. On the leg, blistering and PURPURA may follow. The bacteria enter the skin through a ?ssure in a toe cleft (often associated with tinea pedis [RINGWORM]) or via a crack in the skin behind an ear or in a nostril.

Treatment PENICILLIN in full dosage should be given orally for ten days. In those allergic to penicillin, ERYTHROMYCIN can be substituted. Recurrent attacks are common and may cause progressive lymphatic damage leading to chronic OEDEMA. Such recurrences can be prevented by long-term prophylactic oral penicillin.... erysipelas

Gastroenteritis

Inflammation of the stomach and small intestines. It is more likely to be infectious than simple gastritis and is often accompanied by fever and general malaise.... gastroenteritis

Pleurodynia

Also known as BORNHOLM DISEASE. A painful condition of the chest wall, it is usually the result of an infection of coxsackie virus B (see COXSACKIE VIRUSES) and may occur in epidemics (see EPIDEMIC). Fever, sore throat, headache and malaise are typical but the condition is self-limiting, subsiding within a few days.... pleurodynia

Abscess

A collection of pus in a cavity, consisting of spent white blood cells and dead invading micro-organisms. The body’s fight against localised infection may result in suppuration – the discharge of pus. An abscess may appear on any part of the body: ear, nose, throat, teeth, gums, or on the skin as a pimple, boil, stye. A ‘grumbling appendix’ is one form of abscess, caused by internal obstruction and irritation. Internal abscesses are usually accompanied by fever, with malaise and swollen glands under arms, groin or elsewhere. Septicaemia – a dangerous form of blood poisoning – may result where an abscess bursts and discharges purulent matter into the bloodstream.

Abscess of the rectum (anorectal, ischiorectal, perianal) can be exceedingly painful. Chiefly from E. Coli infection, it may be associated with piles, colitis, fissures or small tears in the mucosa from hard faeces. There may be throbbing pain on sitting or defecation. In all cases Echinacea should be given to sustain the immune system.

Alternatives: Abundant herb teas. Burdock leaves, Clivers, Comfrey leaves, Figwort, Gotu Kola, Ground Ivy, Horsetail, Marigold petals, Marshmallow leaves, Mullein, Plantain, Red Clover tops. 1 heaped teaspoon to each cup boiling water: drink half-1 cup thrice daily.

Mixture: Tinctures. Echinacea 30ml; Blue Flag 15ml; Bayberry 5ml; Hydrastis can 1ml; Liquorice 1ml. Dose: One 5ml teaspoon in water, honey or fruit juice thrice daily.

Tablets/capsules. Blue Flag, Echinacea, Poke root, Red Clover, Seaweed and Sarsaparilla, Garlic (or capsules): dosage as on bottle.

Powders. Formula. Echinacea 1; Marshmallow root 1; Goldenseal quarter. Dose: 500mg (one-third teaspoon, or two 00 capsules), thrice daily.

Ointments or poultices: Aloe Vera, Comfrey, Marshmallow and Slippery Elm.

Abscess of the breast. Internal mixture as above.

Abscess of the kidney. Mixture: tinctures. Equal parts: Echinacea, Bearberry, Valerian. Dose: 1-2 5ml teaspoons, thrice daily.

Topical. Ointments or poultices: Aloe Vera, Comfrey, Marshmallow and Slippery Elm.

Diet: Regular raw food days. Vitamin C (oranges, lemons, etc.). Fish oils, oily fish or other vitamin A- rich foods.

Supplements. Vitamins A, B and E. ... abscess

Appendicitis

Inflammation of the vermiform appendix – a small worm-like offshoot from the gut at the junction of the colon and small intestine, in the low right fossa of the abdomen. Blockage leads to stasis and infection. Pain starts from the centre of the abdomen and moves down towards the low right groin focusing on a sensitive spot known as McBurney’s point (midway between the naval and the right groin). Possible history of constipation.

Symptoms. Attack may be sudden, with acute low right abdominal pain. Lost appetite. Vomiting occurs usually only once. Nausea. Temperature slightly raised (102°). Muscles rigid and boardlike. The sufferer tries to find relief by lying on his back with right leg drawn up. Rapid heartbeat.

May lapse into abscess, perforation or peritonitis. If neglected, gangrene is a possibility, therefore a modern hospital is the safest place. In any case surgical excision may be necessary to prevent a burst when pus would discharge into the surrounding cavity causing peritonitis.

Differential diagnosis. Inflammation of the right ovary, gall bladder or kidney, ileitis, diverticulitis, perforated peptic ulcer.

Skin temperature aids diagnosis. Application of Feverscan thermometer detects local skin temperature over the right iliac fossa and records at least 1°C warmer than that on the left.

An added aid to diagnosis is the facial expression which predominantly conveys an aura of malaise with an obvious upward curving of the upper lip. This is not a wince or grimace but a slower reaction, and occurs on gentle pressure over the appendix. Rectal tenderness may indicate peritonitis.

A practitioner’s prescription would be raised according to the individual requirements of each case; some calling for support of nervous system (Skullcap, Lady’s Slipper) or for the heart (Hawthorn, Motherwort), etc.

To be treated by or in liaison with a qualified medical practitioner.

Treatment. Acute stage – immediate hospitalisation.

Tea. Formula. For non-acute stage: equal parts – German Chamomile, Yarrow, Black Horehound. 1 heaped teaspoon to each cup boiling water; infuse 5-15 minutes. 1 cup thrice daily.

Tea: children. Agrimony.

Tablets/capsules. (non-acute stage), Goldenseal, Blue Flag root, Calamus, Cranesbill, Wild Yam. Juice: Aloe Vera.

Chinese medicine. Fenugreek seeds: 2 teaspoons to each cup water simmer 5 minutes. 1 cup thrice daily, consuming the seeds.

Powders. Formula. Echinacea 2; Myrrh half; Wild Yam half; trace of Cayenne. Dose: 750mg (three 00 capsules or half a teaspoon) thrice daily. Every 2 hours for acute cases.

Tinctures. Formula. Echinacea 2; Wild Yam half; Elderflowers 1; few drops Tincture Capsicum (cayenne). Dose: 1-2 teaspoons in water or herb tea thrice daily or every 2 hours for acute cases.

Finlay Ellingwood MD. Equal parts, Liquid Extract Bryonia and Echinacea. Dose: 20 drops in water, hourly. For prevention of sepsis and pus formation.

Eric F.W. Powell, MNIMH. 1 teaspoon Tincture Echinacea; 10 drops Tincture Myrrh; 2 drops Tincture

Capsicum; in wineglassful hot water. Each wineglass taken in sips; dose repeated hourly until pain eases; then less frequently.

Frank Roberts, MNIMH. Liquid extracts: Equal parts, Wild Yam, Echinacea, Lobelia. Mix. 30-60 drops in wineglassful water, sipped 4 times daily.

John Cooper MD, Waldron, Arkansas, USA. 20 grains Epsom’s salts in hot water every 2 hours until pain ceases, then continue half that quantity. To control pain: Tincture Belladonna, 8 drops in water, when necessary.

Enema. Large enemas are not indicated. Warm strong infusion of German Chamomile proves helpful (50 flowers to 1 pint boiling water). Inject with 1 tablespoon warm olive oil.

Topical. Castor oil packs. Chamomile, Catnep, or Linseed poultices. In France, cases of acute appendicitis are treated with Tea Tree oil by abdominal massage as an alternative to surgery; good results reported.

Diet. No solid food taken as long as raised temperature persists. Herb tea and fruit-juice fast.

Remission of fever or after surgery: Slippery Elm gruel. Convalescent stage requires extra protein to make good muscle wastage and loss of weight. Low fibre.

Supplements. Daily. Beta-carotene 300,000iu. Vitamin C 2-3g. Vitamin E 400-800iu. Child: quarter of adult dose.

Acute stage: until the doctor comes. Do not eat or drink, take laxatives or painkillers. Go to bed. Hot water bottle to ease pain. ... appendicitis

Aids/hiv

Acquired Immune De?ciency Syndrome (AIDS) is the clinical manifestation of infection with Human Immunode?ciency Virus (HIV). HIV belongs to the retroviruses, which in turn belong to the lentiviruses (characterised by slow onset of disease). There are two main HIV strains: HIV-1, by far the commonest; and HIV-2, which is prevalent in Western Africa (including Ivory Coast, Gambia, Mali, Nigeria and Sierra Leone). HIV attacks the human immune system (see IMMUNITY) so that the infected person becomes susceptible to opportunistic infections, such as TUBERCULOSIS, PNEUMONIA, DIARRHOEA, MENINGITIS and tumours such as KAPOSI’S SARCOMA. AIDS is thus the disease syndrome associated with advanced HIV infection.

Both HIV-1 and HIV-2 are predominantly sexually transmitted and both are associated with secondary opportunistic infections. However, HIV-2 seems to result in slower damage to the immune system. HIV-1 is known to mutate rapidly and has given rise to other subtypes.

HIV is thought to have occurred in humans in the 1950s, but whether or not it infected humans from another primate species is uncertain. It became widespread in the 1970s but its latency in causing symptoms meant that the epidemic was not noticed until the following decade. Although it is a sexually transmitted disease, it can also be transmitted by intravenous drug use (through sharing an infected needle), blood transfusions with infected blood (hence the importance of e?ective national blood-screening programmes), organ donation, and occupationally (see health-care workers, below). Babies born of HIV-positive mothers can be infected before or during birth, or through breast feeding.

Although HIV is most likely to occur in blood, semen or vaginal ?uid, it has been found in saliva and tears (but not sweat); however, there is no evidence that the virus can be transmitted from these two body ?uids. There is also no evidence that HIV can be transmitted by biting insects (such as mosquitoes). HIV does not survive well in the environment and is rapidly destroyed through drying.

Prevalence At the end of 2003 an estimated 42 million people globally were infected with HIV – up from 40 million two years earlier. About one-third of those with HIV/AIDS are aged 15–24 and most are unaware that they are carrying the virus. During 2003 it is estimated that 5 million adults and children worldwide were newly infected with HIV, and that 3 million adults and children died. In Africa in 2003,

3.4 million people were newly infected and 2.3 million died, with more than 28 million carrying the virus. HIV/AIDS was the leading cause of death in sub-Saharan Africa where over half of the infections were in women and 90 per cent of cases resulted from heterosexual sex. In some southern African countries, one in three pregnant women had HIV.

In Asia and the Paci?c there were 1.2 million new infections and 435,000 deaths. The area with the fastest-growing epidemic is Eastern Europe, especially the Russian Federation where in 2002 around a million people had HIV and there were an estimated 250,000 new infections, with intravenous drug use a key contributor to this ?gure. Seventy-?ve per cent of cases occurred in men, with male-to-male sexual transmission an important cause of infection, though heterosexual activity is a rising cause of infection.

At the end of 2002 the UK had an estimated 55,900 HIV-infected adults aged between 15 and 59. More than 3,600 individuals were newly diagnosed with the infection in 2000, the highest annual ?gure since the epidemic started

– in 1998 the ?gure was 2,817 and in 1999 just over 3,000 (Department of Health and Communicable Disease Surveillance Centre). The incidence of AIDS in the UK has declined sharply since the introduction of highly active antiretroviral therapy (HAART) and HIV-related deaths have also fallen: in 2002 there were 777 reported new AIDS cases and 395 deaths, compared with 1,769 and 1,719 respectively in 1995. (Sources: UNAIDS and WHO, AIDS Epidemic Update, December 2001; Public Health Laboratory Services AIDS and STD Centre Communicable Disease Surveillance and Scottish Centre for Infection and Environmental Health, Quarterly Surveillance Tables.)

Poverty is strongly linked to the spread of AIDS, for various reasons including lack of health education; lack of e?ective public-health awareness; women having little control over sexual behaviour and contraception; and, by comparison with the developed world, little or no access to antiretroviral drugs.

Pathogenesis The cellular target of HIV infection is a subset of white blood cells called T-lymphocytes (see LYMPHOCYTE) which carry the CD4 surface receptor. These so-called ‘helper T-cells’ are vital to the function of cell-mediated immunity. Infection of these cells leads to their destruction (HIV replicates at an enormous rate – 109) and over the course of several years the body is unable to generate suf?cient new cells to keep pace. This leads to progressive destruction of the body’s immune capabilities, evidenced clinically by the development of opportunistic infection and unusual tumours.

Monitoring of clinical progression It is possible to measure the number of viral particles present in the plasma. This gives an accurate guide to the likely progression rate, which will be slow in those individuals with fewer than 10,000 particles per ml of plasma but progressively more rapid above this ?gure. The main clinical monitoring of the immune system is through the numbers of CD4 lymphocytes in the blood. The normal count is around 850 cells per ml and, without treatment, eventual progression to AIDS is likely in those individuals whose CD4 count falls below 500 per ml. Opportunistic infections occur most frequently when the count falls below 200 per ml: most such infections are treatable, and death is only likely when the CD4 count falls below 50 cells per ml when infection is developed with organisms that are di?cult to treat because of their low intrinsic virulence.

Simple, cheap and highly accurate tests are available to detect HIV antibodies in the serum. These normally occur within three months of infection and remain the cornerstone of the diagnosis.

Clinical features Most infected individuals have a viral illness some three weeks after contact with HIV. The clinical features are often non-speci?c and remain undiagnosed but include a ?ne red rash, large lymph nodes, an in?uenza-like illness, cerebral involvement and sometimes the development of opportunistic infections. The antibody test may be negative at this stage but there are usually high levels of virus particles in the blood. The antibody test is virtually always positive within three months of infection. HIV infection is often subsequently asymptomatic for a period of ten years or more, although in most patients progressive immune destruction is occurring during this time and a variety of minor opportunistic infections such as HERPES ZOSTER or oral thrush (see CANDIDA) do occur. In addition, generalised LYMPHADENOPATHY is present in a third of patients and some suffer from severe malaise, weight loss, night sweats, mild fever, ANAEMIA or easy bruising due to THROMBOCYTOPENIA.

The presentation of opportunistic infection is highly variable but usually involves either the CENTRAL NERVOUS SYSTEM, the gastrointestinal tract or the LUNGS. Patients may present with a sudden onset of a neurological de?cit or EPILEPSY due to a sudden onset of a STROKE-like syndrome, or epilepsy due to a space-occupying lesion in the brain – most commonly TOXOPLASMOSIS. In late disease, HIV infection of the central nervous system itself may produce progressive memory loss, impaired concentration and mental slowness called AIDS DEMENTIA. A wide variety of opportunistic PROTOZOA or viruses produces DYSPHAGIA, DIARRHOEA and wasting. In the respiratory system the commonest opportunistic infection associated with AIDS, pneumonia, produces severe shortness of breath and sometimes CYANOSIS, usually with a striking lack of clinical signs in the chest.

In very late HIV infection, when the CD4 count has fallen below 50 cells per ml, infection with CYTOMEGALOVIRUS may produce progressive retinal necrosis (see EYE, DISORDERS OF) which will lead to blindness if untreated, as well as a variety of gastrointestinal symptoms. At this stage, infection with atypical mycobacteria is also common, producing severe anaemia, wasting and fevers. The commonest tumour associated with HIV is Kaposi’s sarcoma which produces purplish skin lesions. This and nonHodgkin’s lymphoma (see LYMPHOMA), which is a hundred times more frequent among HIV-positive individuals than in the general population, are likely to be associated with or caused by opportunistic viral infections.

Prevention There is, as yet, no vaccine to prevent HIV infection. Vaccine development has been hampered

by the large number of new HIV strains generated through frequent mutation and recombination.

because HIV can be transmitted as free virus and in infected cells.

because HIV infects helper T-cells – the very cells involved in the immune response. There are, however, numerous research pro

grammes underway to develop vaccines that are either prophylactic or therapeutic. Vaccine-development strategies have included: recombinant-vector vaccines, in which a live bacterium or virus is genetically modi?ed to carry one or more of the HIV genes; subunit vaccines, consisting of small regions of the HIV genome designed to induce an immune response without infection; modi?ed live HIV, which has had its disease-promoting genes removed; and DNA vaccines – small loops of DNA (plasmids) containing viral genes – that make the host cells produce non-infectious viral proteins which, in turn, trigger an immune response and prime the immune system against future infection with real virus.

In the absence of an e?ective vaccine, preventing exposure remains the chief strategy in reducing the spread of HIV. Used properly, condoms are an extremely e?ective method of preventing exposure to HIV during sexual intercourse and remain the most important public-health approach to countering the further acceleration of the AIDS epidemic. The spermicide nonoxynol-9, which is often included with condoms, is known to kill HIV in vitro; however, its e?ectiveness in preventing HIV infection during intercourse is not known.

Public-health strategies must be focused on avoiding high-risk behaviour and, particularly in developing countries, empowering women to have more control over their lives, both economically and socially. In many of the poorer regions of the world, women are economically dependent on men and refusing sex, or insisting on condom use, even when they know their partners are HIV positive, is not a straightforward option. Poverty also forces many women into the sex industry where they are at greater risk of infection.

Cultural problems in gaining acceptance for universal condom-use by men in some developing countries suggests that other preventive strategies should also be considered. Microbicides used as vaginal sprays or ‘chemical condoms’ have the potential to give women more direct control over their exposure risk, and research is underway to develop suitable products.

Epidemiological studies suggest that male circumcision may o?er some protection against HIV infection, although more research is needed before this can be an established public-health strategy. Globally, about 70 per cent of infected men have acquired the virus through unprotected vaginal sex; in these men, infection is likely to have occurred through the penis with the mucosal epithelia of the inner surface of the foreskin and the frenulum considered the most likely sites for infection. It is suggested that in circumcised men, the glans may become keratinised and thus less likely to facilitate infection. Circumcision may also reduce the risk of lesions caused by other sexually transmitted disease.

Treatment AIDS/HIV treatment can be categorised as speci?c therapies for the individual opportunistic infections – which ultimately cause death – and highly active antiretroviral therapy (HAART) designed to reduce viral load and replication. HAART is also the most e?ective way of preventing opportunistic infections, and has had a signi?cant impact in delaying the onset of AIDS in HIV-positive individuals in developed countries.

Four classes of drugs are currently in use. Nucleoside analogues, including ZIDOVUDINE and DIDANOSINE, interfere with the activity of the unique enzyme of the retrovirus reverse transcriptase which is essential for replication. Nucleotide analogues, such as tenofovir, act in the same way but require no intracellular activation. Non-nucleoside reverse transcriptase inhibitors, such as nevirapine and EFAVIRENZ, act by a di?erent mechanism on the same enzyme. The most potent single agents against HIV are the protease inhibitors, such as lopinavir, which render a unique viral enzyme ineffective. These drugs are used in a variety of combinations in an attempt to reduce the plasma HIV viral load to below detectable limits, which is achieved in approximately 90 per cent of patients who have not previously received therapy. This usually also produces a profound rise in CD4 count. It is likely, however, that such treatments need to be lifelong – and since they are associated with toxicities, long-term adherence is di?cult. Thus the optimum time for treatment intervention remains controversial, with some clinicians believing that this should be governed by the viral load rising above 10,000 copies, and others that it should primarily be designed to prevent the development of opportunistic infections – thus, that initiation of therapy should be guided more by the CD4 count.

It should be noted that the drug regimens have been devised for infection with HIV-1; it is not known how e?ective they are at treating infection with HIV-2.

HIV and pregnancy An HIV-positive woman can transmit the virus to her fetus, with the risk of infection being particularly high during parturition; however, the risk of perinatal HIV transmission can be reduced by antiviral drug therapy. In the UK, HIV testing is available to all women as part of antenatal care. The bene?ts of antenatal HIV testing in countries where antiviral drugs are not available are questionable. An HIV-positive woman might be advised not to breast feed because of the risks of transmitting HIV via breastmilk, but there may be a greater risk associated with not breast feeding at all. Babies in many poor communities are thought to be at high risk of infectious diseases and malnutrition if they are not breast fed and may thus be at greater overall risk of death during infancy.

Counselling Con?dential counselling is an essential part of AIDS management, both in terms of supporting the psychological wellbeing of the individual and in dealing with issues such as family relations, sexual partners and implications for employment (e.g. for health-care workers). Counsellors must be particularly sensitive to culture and lifestyle issues. Counselling is essential both before an HIV test is taken and when the results are revealed.

Health-care workers Health-care workers may be at risk of occupational exposure to HIV, either through undertaking invasive procedures or through accidental exposure to infected blood from a contaminated needle (needlestick injury). Needlestick injuries are frequent in health care – as many as 600,000 to 800,000 are thought to occur annually in the United States. Transmission is much more likely where the worker has been exposed to HIV through a needlestick injury or deep cut with a contaminated instrument than through exposure of mucous membranes to contaminated blood or body ?uids. However, even where exposure occurs through a needlestick injury, the risk of seroconversion is much lower than with a similar exposure to hepatitis C or hepatitis B. A percutaneous exposure to HIV-infected blood in a health-care setting is thought to carry a risk of about one infection per 300 injuries (one in 1,000 for mucous-membrane exposure), compared with one in 30 for hepatitis C, and one in three for hepatitis B (when the source patient is e-antigen positive).

In the event of an injury, health-care workers are advised to report the incident immediately where, depending on a risk assessment, they may be o?ered post-exposure prophylaxis (PEP). They should also wash the contaminated area with soap and water (but without scrubbing) and, if appropriate, encourage bleeding at the site of injury. PEP, using a combination of antiretroviral drugs (in a similar regimen to HAART – see above), is thought to greatly reduce the chances of seroconversion; it should be commenced as soon as possible, preferably within one or two hours of the injury. Although PEP is available, safe systems of work are considered to o?er the greatest protection. Double-gloving (latex gloves remove much of the blood from the surface of the needle during a needlestick), correct use of sharps containers (for used needles and instruments), avoiding the resheathing of used needles, reduction in the number of blood samples taken from a patient, safer-needle devices (such as needles that self-blunt after use) and needleless drug administration are all thought to reduce the risk of exposure to HIV and other blood-borne viruses. Although there have been numerous cases of health-care workers developing HIV through occupational exposure, there is little evidence of health-care workers passing HIV to their patients through normal medical procedures.... aids/hiv

Arteries, Diseases Of

ARTERIES are the blood vessels that convey blood away from the heart to the tissues. The commonest cause of arterial disease is a degenerative condition known as atherosclerosis. Less commonly, in?ammation of the arteries occurs; this in?ammation is known as arteritis and occurs in a variety of conditions.

Atherosclerosis is due to the deposition of CHOLESTEROL into the walls of arteries. The process starts in childhood with the development of fatty streaks lining the arteries. In adulthood these progress, scarring and calcifying to form irregular narrowings within the arteries and eventually leading to blockage of the vessel. The consequence of the narrowing or blockage depends on which vessels are involved

– diseased cerebral vessels cause strokes; coronary vessels cause angina and heart attacks; renal vessels cause renal failure; and peripheral arteries cause limb ischaemia (localised bloodlessness).

Risk factors predisposing individuals to atherosclerosis include age, male gender, raised plasma cholesterol concentration, high blood pressure, smoking, a family history of atherosclerosis, diabetes and obesity.

Arteritis occurs in a variety of conditions that produce in?ammation in the arteries. Examples include syphilis – now rare in Britain

– which produces in?ammation of the aorta with subsequent dilatation (aneurysm formation) and risk of rupture; giant cell arteritis (temporal arteritis), a condition usually affecting the elderly, which involves the cranial arteries and leads to headache, tenderness over the temporal arteries and the risk of sudden blindness; Takayasu’s syndrome, predominantly affecting young females, which involves the aortic arch and its major branches, leading to the absence of pulse in affected vessels; and polyarteritis nodosa, a condition causing multiple small nodules to form on the smaller arteries. General symptoms such as fever, malaise, weakness, anorexia and weight loss are accompanied by local manifestations of ischaemia (bloodlessness) in di?erent parts of the body.... arteries, diseases of

Blind Loop Syndrome

A disorder in which abnormal FAECES occur as a result of a redundant loop in the small INTESTINE. The loop obstructs the normal ?ow of the contents of the bowel, causing stagnation. The syndrome is characterised by light-yellow, smelly, fatty, bulky faeces. The patient suffers from tiredness, malaise and loss of weight. Previous abdominal surgery is sometimes the cause, but the condition can be inherited. Blockage of intestinal contents upsets the bowel’s normal bacterial balance and hinders the normal absorption of nutrients. Treatment is either with antibiotics or, if that fails, surgery.... blind loop syndrome

Cat-scratch Fever

An infection in humans caused by a small gram-negative BACILLUS (Bartonella henselae). The domestic cat is a reservoir for the bacteria, and up to 50 per cent of the cat population may be affected. The disorder manifests itself as a skin lesion 3–10 days after a minor scratch; within two weeks the victim’s lymph glands enlarge and may produce pus. Fever, headache and malaise occur in some patients. Antibiotics do not seem to be e?ective. The skin lesion and lymph-gland enlargement subside spontaneously within 2–5 months.... cat-scratch fever

Chronic Disorder

A persistent or recurring condition or group of symptoms. Chronic disorders are customarily contrasted with acute diseases which start suddenly and last a short time. The symptoms of acute disease often include breathlessness, fever, severe pain and malaise, with the patient’s condition changing from day to day or even hour to hour. Those suffering from chronic conditions – for example, severe arthritis, protracted lung disease, ASTHMA or SILICOSIS – should be distinguished from those with a ‘static disability’ following a stroke or injury. Chronic disorders steadily deteriorate, often despite treatment and the patient is increasingly unable to carry out his or her daily activities.... chronic disorder

Cough

A natural re?ex reaction to irritation of the AIR PASSAGES and LUNGS. Air is drawn into the air passages with the GLOTTIS wide open. The inhaled air is blown out against the closed glottis, which, as the pressure builds up, suddenly opens, expelling the air – at an estimated speed of 960 kilometres (600 miles) an hour. This explosive exhalation expels harmful substances from the respiratory tract. Causes of coughing include infection – for example, BRONCHITIS or PNEUMONIA; in?ammation of the respiratory tract associated with ASTHMA; and exposure to irritant agents such as chemical fumes or smoke (see also CROUP).

The explosive nature of coughing results in a spray of droplets into the surrounding air and, if these are infective, hastens the spread of colds (see COLD, COMMON) and INFLUENZA. Coughing is, however, a useful reaction, helping the body to rid itself of excess phlegm (mucus) and other irritants. The physical e?ort of persistent coughing, however, can itself increase irritation of the air passages and cause distress to the patient. Severe and protracted coughing may, rarely, fracture a rib or cause PNEUMOTHORAX. Coughs can be classi?ed as productive – when phlegm is present – and dry, when little or no mucus is produced.

Most coughs are the result of common-cold infections but a persistent cough with yellow or green sputum is indicative of infection, usually bronchitis, and sufferers should seek medical advice as medication and postural drainage (see PHYSIOTHERAPY) may be needed. PLEURISY, pneumonia and lung CANCER are all likely to cause persistent coughing, sometimes associated with chest pain, so it is clearly important for people with a persistent cough, usually accompanied by malaise or PYREXIA, to seek medical advice.

Treatment Treatment of coughs requires treatment of the underlying cause. In the case of colds, symptomatic treatment with simple remedies such as inhalation of steam is usually as e?ective as any medicines, though ANALGESICS or ANTIPYRETICS may be helpful if pain or a raised temperature are among the symptoms. Many over-the-counter preparations are available and can help people cope with the symptoms. Preparations may contain an analgesic, antipyretic, decongestant or antihistamine in varying combinations. Cough medicines are generally regarded by doctors as ine?ective unless used in doses so large they are likely to cause sedation as they act on the part of the brain that controls the cough re?ex.

Cough suppressants may contain CODEINE, DEXTROMETHORPHAN, PHOLCODINE and sedating ANTIHISTAMINE DRUGS. Expectorant preparations usually contain subemetic doses of substances such as ammonium chloride, IPECACUANHA, and SQUILL (none of which have proven worth), while demulcent preparations contain soothing, harmless agents such as syrup or glycerol.

A list of systemic cough and decongestant preparations on sale to the public, together with their key ingredients, appears in the British National Formulary.... cough

Carbon Monoxide (co)

This is a colourless, odourless, tasteless, nonirritating gas formed on incomplete combustion of organic fuels. Exposure to CO is frequently due to defective gas, oil or solid-fuel heating appliances. CO is a component of car exhaust fumes and deliberate exposure to these is a common method of suicide. Victims of ?res often suffer from CO poisoning. CO combines reversibly with oxygen-carrying sites of HAEMOGLOBIN (Hb) molecules with an a?nity 200 to 300 times greater than oxygen itself. The carboxyhaemoglobin (COHb) formed becomes unavailable for oxygen transportation. In addition the partial saturation of the Hb molecule results in tighter oxygen binding, impairing delivery to the tissues. CO also binds to MYOGLOBIN and respiratory cytochrome enzymes. Exposure to CO at levels of 500 parts per million (ppm) would be expected to cause mild symptoms only and exposure to levels of 4,000 ppm would be rapidly fatal.

Each year around 50 people in the United Kingdom are reported as dying from carbon monoxide poisoning, and experts have suggested that as many as 25,000 people a year are exposed to its effects within the home, but most cases are unrecognised, unreported and untreated, even though victims may suffer from long-term effects. This is regrettable, given that Napoleon’s surgeon, Larrey, recognised in the 18th century that soldiers were being poisoned by carbon monoxide when billeted in huts heated by woodburning stoves. In the USA it is estimated that 40,000 people a year attend emergency departments suffering from carbon monoxide poisoning. So prevention is clearly an important element in dealing with what is sometimes termed the ‘silent killer’. Safer designs of houses and heating systems, as well as wider public education on the dangers of carbon monoxide and its sources, are important.

Clinical effects of acute exposure resemble those of atmospheric HYPOXIA. Tissues and organs with high oxygen consumption are affected to a great extent. Common effects include headaches, weakness, fatigue, ?ushing, nausea, vomiting, irritability, dizziness, drowsiness, disorientation, incoordination, visual disturbances, TACHYCARDIA and HYPERVENTILATION. In severe cases drowsiness may progress rapidly to COMA. There may also be metabolic ACIDOSIS, HYPOKALAEMIA, CONVULSIONS, HYPOTENSION, respiratory depression, ECG changes and cardiovascular collapse. Cerebral OEDEMA is common and will lead to severe brain damage and focal neurological signs. Signi?cant abnormalities on physical examination include impaired short-term memory, abnormal Rhomberg’s test (standing unsupported with eyes closed) and unsteadiness of gait including heel-toe walking. Any one of these signs would classify the episode as severe. Victims’ skin may be coloured pink, though this is very rarely seen even in severe incidents. The venous blood may look ‘arterial’. Patients recovering from acute CO poisoning may suffer neurological sequelae including TREMOR, personality changes, memory impairment, visual loss, inability to concentrate and PARKINSONISM. Chronic low-level exposures may result in nausea, fatigue, headache, confusion, VOMITING, DIARRHOEA, abdominal pain and general malaise. They are often misdiagnosed as in?uenza or food poisoning.

First-aid treatment is to remove the victim from the source of exposure, ensure an e?ective airway and give 100-per-cent oxygen by tight-?tting mask. In hospital, management is largely suppportive, with oxygen administration. A blood sample for COHb level determination should be taken as soon as practicable and, if possible, before oxygen is given. Ideally, oxygen therapy should continue until the COHb level falls below 5 per cent. Patients with any history of unconsciousness, a COHb level greater than 20 per cent on arrival, any neurological signs, any cardiac arrhythmias or anyone who is pregnant should be referred for an expert opinion about possible treatment with hyperbaric oxygen, though this remains a controversial therapy. Hyperbaric oxygen therapy shortens the half-life of COHb, increases plasma oxygen transport and reverses the clinical effects resulting from acute exposures. Carbon monoxide is also an environmental poison and a component of cigarette smoke. Normal body COHb levels due to ENDOGENOUS CO production are 0.4 to

0.7 per cent. Non-smokers in urban areas may have level of 1–2 per cent as a result of environmental exposure. Smokers may have a COHb level of 5 to 6 per cent.... carbon monoxide (co)

Goitre

SIMPLE GOITRE A benign enlargement of the THYROID GLAND with normal production of hormone. It is ENDEMIC in certain geographical areas where there is IODINE de?ciency. Thus, if iodine intake is de?cient, the production of thyroid hormone is threatened and the anterior PITUITARY GLAND secretes increased amounts of thyrotrophic hormone with consequent overgrowth of the thyroid gland. Simple goitres in non-endemic areas may occur at puberty, during pregnancy and at the menopause, which are times of increased demand for thyroid hormone. The only e?ective treament is thyroid replacement therapy to suppress the enhanced production of thyrotrophic hormone. The prevalence of endemic goitre can be, and has been, reduced by the iodinisation of domestic salt in many countries. NODULAR GOITRES do not respond as well as the di?use goitres to THYROXINE treatment. They are usually the result of alternating episodes of hyperplasia and involution which lead to permanent thyroid enlargement. The only e?ective way of curing a nodular goitre is to excise it, and THYROIDECTOMY should be recommended if the goitre is causing pressure symptoms or if there is a suspicion of malignancy. LYMPHADENOID GOITRES are due to the production of ANTIBODIES against antigens (see ANTIGEN) in the thyroid gland. They are an example of an autoimmune disease. They tend to occur in the third and fourth decade and the gland is much ?rmer than the softer gland of a simple goitre. Lymphadenoid goitres respond to treatment with thyroxine. TOXIC GOITRES may occur in thyrotoxicosis (see below), although much less frequently autonomous nodules of a nodular goitre may be responsible for the increased production of thyroxine and thus cause thyrotoxicosis. Thyrotoxicosis is also an autoimmune disease in which an antibody is produced that stimulates the thyroid to produce excessive amounts of hormone, making the patient thyrotoxic.

Rarely, an enlarged gland may be the result of cancer in the thyroid.

Treatment A symptomless goitre may gradually disappear or be so small as not to merit treatment. If the goitre is large or is causing the patient di?culty in swallowing or breathing, it may need surgical removal by partial or total thyroidectomy. If the patient is de?cient in iodine, ?sh and iodised salt should be included in the diet.

Hyperthyroidism is a common disorder affecting 2–5 per cent of all females at some time in their lives. The most common cause – around 75 per cent of cases – is thyrotoxicosis (see below). An ADENOMA (or multiple adenomas) or nodules in the thyroid also cause hyperthyroidism. There are several other rare causes, including in?ammation caused by a virus, autoimune reactions and cancer. The symptoms of hyperthyroidism affect many of the body’s systems as a consequence of the much-increased metabolic rate.

Thyrotoxicosis is a syndrome consisting of di?use goitre (enlarged thyroid gland), over-activity of the gland and EXOPHTHALMOS (protruding eyes). Patients lose weight and develop an increased appetite, heat intolerance and sweating. They are anxious, irritable, hyperactive, suffer from TACHYCARDIA, breathlessness and muscle weakness and are sometimes depressed. The hyperthyroidism is due to the production of ANTIBODIES to the TSH receptor (see THYROTROPHIN-STIMULATING HORMONE (TSH)) which stimulate the receptor with resultant production of excess thyroid hormones. The goitre is due to antibodies that stimulate the growth of the thyroid gland. The exoph-

thalmos is due to another immunoglobulin called the ophthalmopathic immunoglobulin, which is an antibody to a retro-orbital antigen on the surface of the retro-orbital EYE muscles. This provokes in?ammation in the retro-orbital tissues which is associated with the accumulation of water and mucopolysaccharide which ?lls the orbit and causes the eye to protrude forwards.

Although thyrotoxicosis may affect any age-group, the peak incidence is in the third decade. Females are affected ten times as often as males; the prevalence in females is one in 500. As with many other autoimmune diseases, there is an increased prevalence of autoimmune thyroid disease in the relatives of patients with thyrotoxicosis. Some of these patients may have hypothyroidism (see below) and others, thyrotoxicosis. Patients with thyrotoxicosis may present with a goitre or with the eye signs or, most commonly, with the symptoms of excess thyroid hormone production. Thyroid hormone controls the metabolic rate of the body so that the symptoms of hyperthyroidism are those of excess metabolism.

The diagnosis of thyrotoxicosis is con?rmed by the measurement of the circulating levels of the two thyroid hormones, thyroxine and TRIIODOTHYRONINE.

Treatment There are several e?ective treatments for thyrotoxicosis. ANTITHYROID DRUGS These drugs inhibit the iodination of tyrosine and hence the formation of the thyroid hormones. The most commonly used drugs are carbimazole and propylthiouricil: these will control the excess production of thyroid hormones in virtually all cases. Once the patient’s thyroid is functioning normally, the dose can be reduced to a maintenance level and is usually continued for two years. The disadvantage of antithyroid drugs is that after two years’ treatment nearly half the patients will relapse and will then require more de?nitive therapy. PARTIAL THYROIDECTOMY Removal of three-quarters of the thyroid gland is e?ective treatment of thyrotoxicosis. It is the treatment of choice in those patients with large goitres. The patient must however be treated with medication so that they are euthyroid (have a normally functioning thyroid) before surgery is undertaken, or thyroid crisis and cardiac arrhythmias may complicate the operation. RADIOACTIVE IODINE THERAPY This has been in use for many years, and is an e?ective means of controlling hyperthyroidism. One of the disadvantages of radioactive iodine is that the incidence of hypothyroidism is much greater than with other forms of treatment. However, the management of hypothyroidism is simple and requires thyroxine tablets and regular monitoring for hypothyroidism. There is no evidence of any increased incidence of cancer of the thyroid or LEUKAEMIA following radio-iodine therapy. It has been the pattern in Britain to reserve radio-iodine treatment to those over the age of 35, or those whose prognosis is unlikely to be more than 30 years as a result of cardiac or respiratory disease. Radioactive iodine treatment should not be given to a seriously thyrotoxic patient. BETA-ADRENOCEPTOR-BLOCKING DRUGS Usually PROPRANOLOL HYDROCHLORIDE: useful for symptomatic treatment during the ?rst 4–8 weeks until the longer-term drugs have reduced thyroid activity.

Hypothyroidism A condition resulting from underactivity of the thyroid gland. One form, in which the skin and subcutaneous tissues thicken and result in a coarse appearance, is called myxoedema. The thyroid gland secretes two hormones – thyroxine and triiodothyronine – and these hormones are responsible for the metabolic activity of the body. Hypothyroidism may result from developmental abnormalities of the gland, or from a de?ciency of the enzymes necessary for the synthesis of the hormones. It may be a feature of endemic goitre and retarded development, but the most common cause of hypothyroidism is the autoimmune destruction of the thyroid known as chronic thyroiditis. It may also occur as a result of radio-iodine treatment of thyroid overactivity (see above) and is occasionally secondary to pituitary disease in which inadequate TSH production occurs. It is a common disorder, occurring in 14 per 1,000 females and one per 1,000 males. Most patients present between the age of 30 and 60 years.

Symptoms As thyroid hormones are responsible for the metabolic rate of the body, hypothyroidism usually presents with a general sluggishness: this affects both physical and mental activities. The intellectual functions become slow, the speech deliberate and the formation of ideas and the answers to questions take longer than in healthy people. Physical energy is reduced and patients frequently complain of lethargy and generalised muscle aches and pains. Patients become intolerant of the cold and the skin becomes dry and swollen. The LARYNX also becomes swollen and gives rise to a hoarseness of the voice. Most patients gain weight and develop constipation. The skin becomes dry and yellow due to the presence of increased carotene. Hair becomes thinned and brittle and even baldness may develop. Swelling of the soft tissues may give rise to a CARPAL TUNNEL SYNDROME and middle-ear deafness. The diagnosis is con?rmed by measuring the levels of thyroid hormones in the blood, which are low, and of the pituitary TSH which is raised in primary hypothyroidism.

Treatment consists of the administration of thyroxine. Although tri-iodothyronine is the metabolically active hormone, thyroxine is converted to tri-iodothyronine by the tissues of the body. Treatment should be started cautiously and slowly increased to 0·2 mg daily – the equivalent of the maximum output of the thyroid gland. If too large a dose is given initially, palpitations and tachycardia are likely to result; in the elderly, heart failure may be precipitated.

Congenital hypothyroidism Babies may be born hypothyroid as a result of having little or no functioning thyroid-gland tissue. In the developed world the condition is diagnosed by screening, all newborn babies having a blood test to analyse TSH levels. Those found positive have a repeat test and, if the diagnosis is con?rmed, start on thyroid replacement therapy within a few weeks of birth. As a result most of the ill-effects of cretinism can be avoided and the children lead normal lives.

Thyroiditis In?ammation of the thyroid gland. The acute form is usually caused by a bacterial infection elsewhere in the body: treatment with antibiotics is needed. Occasionally a virus may be the infectious agent. Hashimoto’s thyroiditis is an autoimmune disorder causing hypothyroidism (reduced activity of the gland). Subacute thyroiditis is in?ammation of unknown cause in which the gland becomes painful and the patient suffers fever, weight loss and malaise. It sometimes lasts for several months but is usually self-limiting.

Thyrotoxic adenoma A variety of thyrotoxicosis (see hyperthyroidism above) in which one of the nodules of a multinodular goitre becomes autonomous and secretes excess thyroid hormone. The symptoms that result are similar to those of thyrotoxicosis, but there are minor di?erences.

Treatment The ?rst line of treatment is to render the patient euthyroid by treatment with antithyroid drugs. Then the nodule should be removed surgically or destroyed using radioactive iodine.

Thyrotoxicosis A disorder of the thyroid gland in which excessive amounts of thyroid hormones are secreted into the bloodstream. Resultant symptoms are tachycardia, tremor, anxiety, sweating, increased appetite, weight loss and dislike of heat. (See hyperthyroidism above.)... goitre

Humidifier Fever

A form of ALVEOLITIS caused by contamination of the water used to humidify, or moisten, the air in air-conditioning plants. The breathing of the contaminated air results in infection of the lung, which is characterised by fever, cough, shortness of breath and malaise – worse on Monday and tending to improve during the

course of the week. (See also LEGIONNAIRE’S DISEASE.)... humidifier fever

Kidneys, Diseases Of

Diseases affecting the kidneys can be broadly classi?ed into congenital and genetic disorders; autoimmune disorders; malfunctions caused by impaired blood supply; infections; metabolic disorders; and tumours of the kidney. Outside factors may cause functional disturbances – for example, obstruction in the urinary tract preventing normal urinary ?ow may result in hydronephrosis (see below), and the CRUSH SYNDROME, which releases proteins into the blood as a result of seriously damaged muscles (rhabdomyolosis), can result in impaired kidney function. Another outside factor, medicinal drugs, can also be hazardous to the kidney. Large quantities of ANALGESICS taken over a long time damage the kidneys and acute tubular NECROSIS can result from certain antibiotics.

K

Diagram of glomerulus (Malpighian corpuscle).

Fortunately the body has two kidneys and, as most people can survive on one, there is a good ‘functional reserve’ of kidney tissue.

Symptoms Many patients with kidney disorders do not have any symptoms, even when the condition is quite advanced. However,

others experience loin pain associated with obstruction (renal colic) or due to infection; fevers; swelling (oedema), usually of the legs but occasionally including the face and arms; blood in the urine (haematuria); and excess quantities of urine (polyuria), including at night (nocturia), due to failure of normal mechanisms in the kidney for concentrating urine. Patients with chronic renal failure often have very di?use symptoms including nausea and vomiting, tiredness due to ANAEMIA, shortness of breath, skin irritation, pins and needles (paraesthesia) due to damage of the peripheral nerves (peripheral neuropathy), and eventually (rarely seen nowadays) clouding of consciousness and death.

Signs of kidney disease include loin tenderness, enlarged kidneys, signs of ?uid retention, high blood pressure and, in patients with end-stage renal failure, pallor, pigmentation and a variety of neurological signs including absent re?exes, reduced sensation, and a coarse ?apping tremor (asterixis) due to severe disturbance of the body’s normal metabolism.

Renal failure Serious kidney disease may lead to impairment or failure of the kidney’s ability to ?lter waste products from the blood and excrete them in the urine – a process that controls the body’s water and salt balance and helps to maintain a stable blood pressure. Failure of this process causes URAEMIA – an increase in urea and other metabolic waste products – as well as other metabolic upsets in the blood and tissues, all of which produce varying symptoms. Failure can be sudden or develop more slowly (chronic). In the former, function usually returns to normal once the underlying cause has been treated. Chronic failure, however, usually irreparably reduces or stops normal function.

Acute failure commonly results from physiological shock following a bad injury or major illness. Serious bleeding or burns can reduce blood volume and pressure to the point where blood-supply to the kidney is greatly reduced. Acute myocardial infarction (see HEART, DISEASES OF) or pancreatitis (see PANCREAS, DISORDERS OF) may produce a similar result. A mismatched blood transfusion can produce acute failure. Obstruction to the urine-?ow by a stone (calculus) in the urinary tract, a bladder tumour or an enlarged prostate can also cause acute renal failure, as can glomerulonephritis (see below) and the haemolytic-uraemia syndrome.

HYPERTENSION, DIABETES MELLITUS, polycystic kidney disease (see below) or AMYLOIDOSIS are among conditions that cause chronic renal failure. Others include stone, tumour, prostatic enlargement and overuse of analgesic drugs. Chronic failure may eventually lead to end-stage renal failure, a life-threatening situation that will need DIALYSIS or a renal transplant (see TRANSPLANTATION).

Familial renal disorders include autosomal dominant inherited polycystic kidney disease and sex-linked familial nephropathy. Polycystic kidney disease is an important cause of renal failure in the UK. Patients, usually aged 30–50, present with HAEMATURIA, loin or abdominal discomfort or, rarely, urinary-tract infection, hypertension and enlarged kidneys. Diagnosis is based on ultrasound examination of the abdomen. Complications include renal failure, hepatic cysts and, rarely, SUBARACHNOID HAEMORRHAGE. No speci?c treatment is available. Familial nephropathy occurs more often in boys than in girls and commonly presents as Alport’s syndrome (familial nephritis with nerve DEAFNESS) with PROTEINURIA, haematuria, progressing to renal failure and deafness. The cause of the disease lies in an absence of a speci?c ANTIGEN in a part of the glomerulus. The treatment is conservative, with most patients eventually requiring dialysis or transplantation.

Acute glomerulonephritis is an immune-complex disorder due to entrapment within glomerular capillaries of ANTIGEN (usually derived from B haemolytic streptococci – see STREPTOCOCCUS) antibody complexes initiating an acute in?ammatory response (see IMMUNITY). The disease affects children and young adults, and classically presents with a sore throat followed two weeks later by a fall in urine output (oliguria), haematuria, hypertension and mildly abnormal renal function. The disease is self-limiting with 90 per cent of patients spontaneously recovering. Treatment consists of control of blood pressure, reduced ?uid and salt intake, and occasional DIURETICS and ANTIBIOTICS.

Chronic glomerulonephritis is also due to immunological renal problems and is also classi?ed by taking a renal biopsy. It may be subdivided into various histological varieties as determined by renal biospy. Proteinuria of various degrees is present in all these conditions but the clinical presentations vary, as do their treatments. Some resolve spontaneously; others are treated with steroids or even the cytotoxic drug CYCLOPHOSPHAMIDE or the immunosuppressant cyclosporin. Prognoses are generally satisfactory but some patients may require renal dialysis or kidney transplantation – an operation with a good success rate.

Hydronephrosis A chronic disease in which the kidney becomes greatly distended with ?uid. It is caused by obstruction to the ?ow of urine at the pelvi-ureteric junction (see KIDNEYS – Structure). If the ureter is obstructed, the ureter proximal to the obstruction will dilate and pressure will be transmitted back to the kidney to cause hydronephrosis. Obstruction may occur at the bladder neck or in the urethra itself. Enlargement of the prostate is a common cause of bladder-neck obstruction; this would give rise to hypertrophy of the bladder muscle and both dilatation of the ureter and hydronephrosis. If the obstruction is not relieved, progressive destruction of renal tissue will occur. As a result of the stagnation of the urine, infection is probable and CYSTITIS and PYELONEPHRITIS may occur.

Impaired blood supply may be the outcome of diabetes mellitus and physiological shock, which lowers the blood pressure, also affecting the blood supply. The result can be acute tubular necrosis. POLYARTERITIS NODOSA and SYSTEMIC LUPUS ERYTHEMATOSUS (SLE) may damage the large blood vessels in the kidney. Treatment is of the underlying condition.

Infection of the kidney is called pyelonephritis, a key predisposing factor being obstruction of urine ?ow through the urinary tract. This causes stagnation and provides a fertile ground for bacterial growth. Acute pyelonephritis is more common in women, especially during pregnancy when bladder infection (CYSTITIS) spreads up the ureters to the kidney. Symptoms are fever, malaise and backache. Antibiotics and high ?uid intake are the most e?ective treatment. Chronic pyelonephritis may start in childhood as a result of congenital deformities that permit urine to ?ow up from the bladder to the kidney (re?ux). Persistent re?ux leads to recurrent infections causing permanent damage to the kidney. Specialist investigations are usually required as possible complications include hypertension and kidney failure.

Tumours of the kidney are fortunately rare. Non-malignant ones commonly do not cause symptoms, and even malignant tumours (renal cell carcinoma) may be asymptomatic for many years. As soon as symptoms appear – haematuria, back pain, nausea, malaise, sometimes secondary growths in the lungs, bones or liver, and weight loss – urgent treatment including surgery, radiotherapy and chemotherapy is necessary. This cancer occurs mostly in adults over 40 and has a hereditary element. The prognosis is not good unless diagnosed early. In young children a rare cancer called nephroblastoma (Wilm’s tumour) can occur; treatment is with surgery, radiotherapy and chemotherapy. It may grow to a substantial size before being diagnosed.

Cystinuria is an inherited metabolic defect in the renal tubular reabsorption of cystine, ornithine, lysine and arginine. Cystine precipitates in an alkaline urine to form cystine stones. Triple phosphate stones are associated with infection and may develop into a very large branching calculi (staghorn calculi). Stones present as renal or ureteric pain, or as an infection. Treatment has undergone considerable change with the introduction of MINIMALLY INVASIVE SURGERY (MIS) and the destruction of stone by sound waves (LITHOTRIPSY).... kidneys, diseases of

Menstruation

A periodic change occurring in (female) human beings and the higher apes, consisting chie?y in a ?ow of blood from the cavity of the womb (UTERUS) and associated with various slight constitutional disturbances. It begins between the ages of 12 and 15, as a rule – although its onset may be delayed until as late as 20, or it may begin as early as ten or 11. Along with its ?rst appearance, the body develops the secondary sex characteristics: for example, enlargement of the BREASTS, and characteristic hair distribution. The duration of each menstrual period varies in di?erent persons from 2– 8 days. It recurs in the great majority of cases with regularity, most commonly at intervals of 28 or 30 days, less often with intervals of 21 or 27 days, and ceasing only during pregnancy and lactation, until the age of 45 or 50 arrives, when it stops altogether – as a rule ceasing early if it has begun early, and vice versa. The ?nal stoppage is known as the MENOPAUSE or the CLIMACTERIC.

Menstruation depends upon a functioning ovary (see OVARIES) and this upon a healthy PITUITARY GLAND. The regular rhythm may depend upon a centre in the HYPOTHALAMUS, which is in close connection with the pituitary. After menstruation, the denuded uterine ENDOMETRIUM is regenerated under the in?uence of the follicular hormone, oestradiol. The epithelium of the endometrium proliferates, and about a fortnight after the beginning of menstruation great development of the endometrial glands takes place under the in?uence of progesterone, the hormone secreted by the CORPUS LUTEUM. These changes are made for the reception of the fertilised OVUM. In the absence of fertilisation the uterine endometrium breaks down in the subsequent menstrual discharge.

Disorders of menstruation In most healthy women, menstruation proceeds regularly for 30 years or more, with the exceptions connected with childbirth. In many women, however, menstruation may be absent, excessive or painful. The term amenorrhoea is applied to the condition of absent menstruation; the terms menorrhagia and metrorrhagia describe excessive menstrual loss – the former if the excess occurs at the regular periods, and the latter if it is irregular. Dysmenorrhoea is the name given to painful menstruation. AMENORRHOEA If menstruation has never occurred, the amenorrhoea is termed primary; if it ceases after having once become established it is known as secondary amenorrhoea. The only value of these terms is that some patients with either chromosomal abnormalities (see CHROMOSOMES) or malformations of the genital tract fall into the primary category. Otherwise, the age of onset of symptoms is more important.

The causes of amenorrhoea are numerous and treatment requires dealing with the primary cause. The commonest cause is pregnancy; psychological stress or eating disorders can cause amenorrhoea, as can poor nutrition or loss of weight by dieting, and any serious underlying disease such as TUBERCULOSIS or MALARIA. The excess secretion of PROLACTIN, whether this is the result of a micro-adenoma of the pituitary gland or whether it is drug induced, will cause amenorrhoea and possibly GALACTORRHOEA as well. Malfunction of the pituitary gland will result in a failure to produce the gonadotrophic hormones (see GONADOTROPHINS) with consequent amenorrhoea. Excessive production of cortisol, as in CUSHING’S SYNDROME, or of androgens (see ANDROGEN) – as in the adreno-genital syndrome or the polycystic ovary syndrome – will result in amenorrhoea. Amenorrhoea occasionally follows use of the oral contraceptive pill and may be associated with both hypothyroidism (see under THYROID GLAND, DISEASES OF) and OBESITY.

Patients should be reassured that amenorrhoea can often be successfully treated and does not necessarily affect their ability to have normal sexual relations and to conceive. When weight loss is the cause of amenorrhoea, restoration of body weight alone can result in spontaneous menstruation (see also EATING DISORDERS – Anorexia nervosa). Patients with raised concentration of serum gonadotrophin hormones have primary ovarian failure, and this is not amenable to treatment. Cyclical oestrogen/progestogen therapy will usually establish withdrawal bleeding. If the amenorrhoea is due to mild pituitary failure, menstruation may return after treatment with clomiphene, a nonsteroidal agent which competes for oestrogen receptors in the hypothalamus. The patients who are most likely to respond to clomiphene are those who have some evidence of endogenous oestrogen and gonadotrophin production. IRREGULAR MENSTRUATION This is a change from the normal monthly cycle of menstruation, the duration of bleeding or the amount of blood lost (see menorrhagia, below). Such changes may be the result of an upset in the balance of oestrogen and progesterone hormones which between them control the cycle. Cycles may be irregular after the MENARCHE and before the menopause. Unsuspected pregnancy may manifest itself as an ‘irregularity’, as can an early miscarriage (see ABORTION). Disorders of the uterus, ovaries or organs in the pelvic cavity can also cause irregular menstruation. Women with the condition should seek medical advice. MENORRHAGIA Abnormal bleeding from the uterus during menstruation. A woman loses on average about 60 ml of blood during her period; in menorrhagia this can rise to 100 ml. Some women have this problem occasionally, some quite frequently and others never. One cause is an imbalance of progesterone and oestrogen hormones which between them control menstruation: the result is an abnormal increase in the lining (endometrium) of the uterus, which increases the amount of ‘bleeding’ tissue. Other causes include ?broids, polyps, pelvic infection or an intrauterine contraceptive device (IUD – see under CONTRACEPTION). Sometimes no physical reason for menorrhagia can be identi?ed.

Treatment of the disorder will depend on how severe the loss of blood is (some women will become anaemic – see ANAEMIA – and require iron-replacement therapy); the woman’s age; the cause of heavy bleeding; and whether or not she wants children. An increase in menstrual bleeding may occur in the months before the menopause, in which case time may produce a cure. Medical or surgical treatments are available. Non-steroidal anti-in?ammatory drugs may help, as may tranexamic acid, which prevents the breakdown of blood clots in the circulation (FIBRINOLYSIS): this drug can be helpful if an IUD is causing bleeding. Hormones such as dydrogesterone (by mouth) may cure the condition, as may an IUD that releases small quantities of a PROGESTOGEN into the lining of the womb.

Traditionally, surgical intervention was either dilatation and curettage of the womb lining (D & C) or removal of the whole uterus (HYSTERECTOMY). Most surgery is now done using minimally invasive techniques. These do not require the abdomen to be cut open, as an ENDOSCOPE is passed via the vagina into the uterus. Using DIATHERMY or a laser, the surgeon then removes the whole lining of the womb. DYSMENORRHOEA This varies from discomfort to serious pain, and sometimes includes vomiting and general malaise. Anaemia is sometimes a cause of painful menstruation as well as of stoppage of this function.

In?ammation of the uterus, ovaries or FALLOPIAN TUBES is a common cause of dysmenorrhoea which comes on for the ?rst time late in life, especially when the trouble follows the birth of a child. In this case the pain exists more or less at all times, but is aggravated at the periods. Treatment with analgesics and remedying the underlying cause is called for.

Many cases of dysmenorrhoea appear with the beginning of menstrual life, and accompany every period. It has been estimated that 5–10 per cent of girls in their late teens or early 20s are severely incapacitated by dysmenorrhoea for several hours each month. Various causes have been suggested for the pain, one being an excessive production of PROSTAGLANDINS. There may be a psychological factor in some sufferers and, whether this is the result of inadequate sex instruction, fear, family, school or work problems, it is important to o?er advice and support, which in itself may resolve the dysmenorrhoea. Symptomatic relief is of value.... menstruation

Roseola Infantum

A transient EXANTHEM of toddlers. Mild malaise is followed by a RUBELLA-like rash. It is caused by herpes virus 6 (see HERPES VIRUSES).... roseola infantum

Crohn’s Disease

A chronic in?ammatory bowel disease which has a protracted, relapsing and remitting course. An autoimmune condition, it may last for several years. There are many similarities with ULCERATIVE COLITIS; sometimes it can be hard to di?erentiate between the two conditions. A crucial di?erence is that ulcerative colitis is con?ned to the colon (see INTESTINE), whereas Crohn’s disease can affect any part of the gastrointestinal tract, including the mouth and anus. The sites most commonly affected in Crohn’s disease (in order of frequency) are terminal ILEUM and right side of colon, just the colon, just the ileum and ?nally the ileum and JEJUNUM. The whole wall of the affected bowel is oedamatous (see OEDEMA) and thickened, with deep ulcers a characteristic feature. Ulcers may even penetrate the bowel wall, with abscesses and ?stulas developing. Another unusual feature is the presence in the affected bowel lining of islands of normal tissue.

Crohn’s disease is rare in the developing world, but in the western world the incidence is increasing and is now 6–7 per 100,000 population. Around 80,000 people in the UK have the disorder with more than 4,000 new cases occurring annually. Commonly Crohn’s disease starts in young adults, but a second incidence surge occurs in people over 70 years of age. Both genetic and environmental factors are implicated in the disease – for example, if one identical twin develops the disease, the second twin stands a high chance of being affected; and 10 per cent of sufferers have a close relative with in?ammatory bowel disease. Among environmental factors are low-residue, high-re?ned-sugar diets, and smoking.

Symptoms and signs of Crohn’s disease depend on the site affected but include abdominal pain, diarrhoea (sometimes bloody), ANOREXIA, weight loss, lethargy, malaise, ANAEMIA, and sore tongue and lips. An abdominal mass may be present. Complications can be severe, including life-threatening in?ammation of the colon (which may cause TOXAEMIA), perforation of the colon and the development of ?stulae between the bowel and other organs in the abdomen or pelvis. If Crohn’s disease persists for a decade or more there is an increased risk of the victim developing colon cancer. Extensive investigations are usually necessary to diagnose the disease; these include blood tests, bacteriological studies, ENDOSCOPY and biopsy, and barium X-ray examinations.

Treatment As with ulcerative colitis, treatment is aimed primarily at controlling symptoms. Physicians, surgeons, radiologists and dietitians usually adopt a team approach, while counsellors and patient support groups are valuable adjuncts in a disease that is typically lifelong. Drug treatment is aimed at settling the acute phase and preventing relapses. CORTICOSTEROIDS, given locally to the affected gut or orally, are used initially and the effects must be carefully monitored. If steroids do not work, the immunosuppressant agent AZATHIOPRINE should be considered. Antidiarrhoeal drugs may occasionally be helpful but should not be taken during an acute phase. The anti-in?ammatory drug SULFASALAZINE can be bene?cial in mild colitis. A new generation of genetically engineered anti-in?ammatory drugs is now available, and these selective immunosuppressants may prove of value in the treatment of Crohn’s disease.

Diet is important and professional guidance is advisable. Some patients respond to milk- or wheat-free diets, but the best course for most patients is to eat a well-balanced diet, avoiding items that the sufferer knows from experience are poorly tolerated. Of those patients with extensive disease, as many as 80 per cent may require surgery to alleviate symptoms: a section of affected gut may be removed or, as a lifesaving measure, a bowel perforation dealt with.

(See APPENDIX 2: ADDRESSES: SOURCES OF INFORMATION, ADVICE, SUPPORT AND SELFHELP – Colitis; Crohn’s disease.)... crohn’s disease

Hypercalcaemia

A state in which the PLASMA calcium concentration is signi?cantly raised. The most important causes are HYPERPARATHYROIDISM, malignant bone disease and other (non-metastatic) cancers, and chronic renal failure. Less common causes include SARCOIDOSIS, MYELOMATOSIS, vitamin D overdosage (see APPENDIX 5: VITAMINS), hyperthyroidism (see THYROID GLAND, DISEASES OF), and immobilisation.

Signs and symptoms A general malaise and depression are common, with generalised muscular weakness, anorexia and vomiting. Disturbed renal function causes increased urine output and thirst, with calcium deposits eventually leading to renal stones. Primary bone disease may cause pain and weakness, with an increased incidence of fractures, and there may be gritty deposits of calcium in the eyes. Severe hypercalcaemia produces ANURIA, with confusion and COMA leading to death.

Treatment The patient should be rehydrated and a diuretic (see DIURETICS) given. Attention should then be focused on the underlying cause – usually a parathyroid adenoma or bone tumour – and surgical removal should produce complete clinical cure, provided that advanced renal disease is not already present.... hypercalcaemia

Strep Throat

An infection of the throat with STREPTOCOCCUS bacteria: it is most common in children and symptoms range from minor discomfort to sore throat, fever, general malaise and enlarged LYMPH nodes in the neck. If symptoms are severe the infection may lead to SCARLET FEVER. PENICILLIN is the treatment of choice.... strep throat

Tularaemia

A disease of rodents such as rabbits and rats, caused by the bacillus, Francisella tularense, and spread either by ?ies or by direct inoculation – for example, into the hands of a person engaged in skinning rabbits. In humans the disease takes the form of a slow fever lasting several weeks, with much malaise and depression, followed by considerable emaciation. It was ?rst described in the district of Tulare in California, and is found widely spread in North America and in Europe, but not in Great Britain. STREPTOMYCIN, the TETRACYCLINES and CHLORAMPHENICOL o?er e?ective treatment.... tularaemia

Carbon Monoxide

(CO) A colourless, odourless, poisonous gas present in motor exhaust fumes and produced by inefficient burning of coal, gas, or oil.

Carbon monoxide binds with haemoglobin and prevents the transportation of oxygen to body tissues.

The initial symptoms of acute high-level carbon monoxide poisoning are dizziness, headache, nausea, and faintness.

Continued inhalation of the gas may lead to loss of consciousness, permanent brain damage, and even death.

Low-level exposure to carbon monoxide over a period of time may cause fatigue, nausea, diarrhoea, abdominal pain, and general malaise.... carbon monoxide

Mifepristone

A sex hormone drug used to induce medical termination of a pregnancy (see abortion, induced). Possible adverse effects include malaise, faintness, nausea, rash, and, rarely, uterine bleeding. Women over 35 who smoke should not be given the drug.... mifepristone

Enteric Fever

Enteric fever is caused by bacterial infection with either Salmonella typhi or Salmonella paratyphi A, B or C. These infections are called typhoid fever, or paratyphoid fever respectively. Transmission usually occurs by ingestion of water or food that has been contaminated with human faeces – for example, by drinking water contaminated with sewage, or eating foods prepared by a cook infected with or carrying the organisms. Enteric fever is ENDEMIC in many areas of the world, including Africa, Central and South America, the Indian subcontinent and south-east Asia. Infection occasionally occurs in southern and eastern Europe, particularly with S. paratyphi B. However, in northern and western Europe and North America, most cases are imported.

Clinical course The incubation period of enteric fever is 7–21 days. Early symptoms include headache, malaise, dry cough, constipation and a slowly rising fever. Despite the fever, the patient’s pulse rate is often slow and he or she may have an enlarged SPLEEN. In the second week of illness, organisms invade the bloodstream again and symptoms progress. In general, symptoms of typhoid fever are more severe than those of paratyphoid fever: increasing mental slowness and confusion are common, and a more sustained high fever is present. In some individuals, discrete red spots appear on the upper trunk (rose spots). By the third week of illness the patient may become severely toxic, with marked confusion and delirium, abdominal distension, MYOCARDITIS, and occasionally intestinal haemorrage and/or perforation. Such complications may be fatal, although they are unusual if prompt treatment is given. Symptoms improve slowly into the fourth and ?fth weeks, although relapse may occur.

Diagnosis Enteric fever should be considered in any traveller or resident in an ENDEMIC area presenting with a febrile illness. The most common di?erential diagnosis is MALARIA. Diagnosis is usually made by isolation of the organism from cultures of blood in the ?rst two weeks of illness. Later the organisms are found in the stools and urine. Serological tests for ANTIBODIES against Salmonella typhi antigens (see ANTIGEN) (the Widal test) are less useful due to cross-reactions with antigens on other bacteria, and diffculties with interpretation in individuals immunised with typhoid vaccines.

Treatment Where facilities are available, hospital admission is required. Antibiotic therapy with chloramphenicol or amoxyacillin is e?ective. However, the potential toxicity of the former and the widespread resistance that has developed to both these antibiotics has led to the use of QUINOLONES such as CIPROFLOXACIN as the initial therapy for enteric fever in the UK and in areas where resistant organisms are common. A few individuals become chronic carriers of the organisms after they have recovered from the symptoms. These people are a potential source of spread to others and should be excluded from occupations that involve handling food or drinking-water.

Prolonged courses of antibiotic therapy may be required to eradicate carriage.

Prevention Worldwide, the most important preventive measure is improvement of sanitation and maintenance of clean water supplies. Vaccination is available for travellers to endemic areas.... enteric fever

Jaundice

Jaundice is a yellow discoloration of the skin due to the deposition of BILE pigment in its deeper layers. It is the main sign of several disorders of the liver and biliary system. Many babies develop jaundice soon after birth because of the accumulation of BILIRUBIN (yellow bile pigment) in the blood. In most, this is due to liver immaturity and soon disappears, but a serious disorder, HAEMOLYTIC DISEASE OF THE NEWBORN, is a potentially dangerous type of neonatal jaundice that requires treatment.

Types In adults, three types of jaundice occur. They are all the result of disturbance in the mechanism by which HAEMOGLOBIN from the breakdown of ageing red blood cells (erythrocytes) is not properly processed in the liver. Normally the breakdown product of this haemoglobin – bilirubin – is made water-soluble in the liver and excreted via the bile ducts into the small intestine, where it colours the stools dark brown. HAEMOLYTIC JAUNDICE In this type, the amount of bilirubin produced is too much for the liver to deal with, the excess usually being the result of an abnormal level of haemoglobin from the breakdown of blood cells. This haemolytic anaemia, as it is known, has several causes (see ANAEMIA). HEPATOCELLULAR JAUNDICE In this disorder, bilirubin builds up in the blood because liver cells have been damaged or have died – usually as a result of a viral infection (there are four types) causing HEPATITIS, or of liver failure. OBSTRUCTIVE JAUNDICE Also called cholestatic jaundice, this type is characterised by the inability of bile to be discharged from the liver because the bile ducts are blocked as a result of gall-stones (see under GALL-BLADDER, DISEASES OF) or a growth. Sometimes the ducts are absent (atresia) or have been destroyed in the liver as a result of CIRRHOSIS.

Symptoms Yellowness, appearing ?rst in the whites of the eyes and later over the whole skin, is the symptom that attracts notice. Indigestion, nausea, poor appetite and general malaise are other symptoms. The skin may itch, and the faeces are pale because of the absence of bile.

Treatment The essential step is to treat the underlying cause if possible: for instance, gallstones, if these be the cause of the jaundice. Comprehensive laboratory investigations are usually required, and supportive measures are needed. (See also LIVER, DISEASES OF.).... jaundice

Mmr Vaccination

Administration of a combined vaccine that gives protection against measles, mumps, and rubella. The vaccination is offered to all children at 12–15 months of age, with a booster shot at 3–5 years. Vaccination is postponed if a child is feverish, and it is not given to children with untreated cancer or allergies to aminoglycoside antibiotic drugs such as neomycin.

Mild fever, rash, and malaise may occur after vaccination. In 1 per cent of cases, mild, noninfectious swelling of the parotid glands develops 3–4 weeks after vaccination. There is no evidence for a link between and Crohn’s disease or autism.... mmr vaccination

Thrombophlebitis

Inflammation of a section of vein, usually just under the skin, with clot formation in the affected part.

This can occur after minor injury to the vein or as a complication of varicose veins or Buerger’s disease.

The affected blood vessel is swollen, red, and tender, and feels hard.

Fever and malaise may occur.

A blood clot may develop.

Treatment includes support with a bandage, nonsteroidal anti-inflammatory drugs, and sometimes antibiotic drugs.

The condition usually clears up in 10–14 days.... thrombophlebitis

Tonic

One of a diverse group of remedies intended to relieve symptoms such as malaise, lethargy, and loss of appetite.

Evidence suggests that tonics mainly have a placebo effect.

The term tonic is also used adjectivally to relate to muscle tone (see tone, muscle), as in the tonic neck reflex, one of the primitive reflexes found in newborn infants.... tonic

Hepatitis

In?ammation of the LIVER which damages liver cells and may ultimately kill them. Acute injury of the liver is usually followed by complete recovery, but prolonged in?ammation after injury may result in FIBROSIS and CIRRHOSIS. Excluding trauma, hepatitis has several causes:

Viral infections by any of hepatitis A, B, C, D, or E viruses and also CYTOMEGALOVIRUS (CMV), EPSTEIN BARR VIRUS, and HERPES SIMPLEX.

Autoimmune disorders such as autoimmune chronic hepatitis, toxins, alcohol and certain drugs – ISONIAZID, RIFAMPICIN, HALOTHANE and CHLORPROMAZINE.

WILSON’S DISEASE.

Acute viral hepatitis causes damage throughout the liver and in severe infections may destroy whole lobules (see below).

Chronic hepatitis is typi?ed by an invasion of the portal tract by white blood cells (mild hepatitis). If these mononuclear in?ammatory cells invade the body (parenchyma) of the liver tissue, ?brosis and then chronic disease or cirrhosis can develop. Cirrhosis may develop at any age and commonly results in prolonged ill health. It is an important cause of premature death, with excessive alcohol consumption commonly the triggering factor. Sometimes, cirrhosis may be asymptomatic, but common symptoms are weakness, tiredness, poor appetite, weight loss, nausea, vomiting, abdominal discomfort and production of abnormal amounts of wind. Initially, the liver may enlarge, but later it becomes hard and shrunken, though rarely causing pain. Skin pigmentation may occur along with jaundice, the result of failure to excrete the liver product BILIRUBIN. Routine liver-function tests on blood are used to help diagnose the disease and to monitor its progress. Spider telangiectasia (caused by damage to blood vessels – see TELANGIECTASIS) usually develop, and these are a signi?cant pointer to liver disease. ENDOCRINE changes occur, especially in men, who lose their typical hair distribution and suffer from atrophy of their testicles. Bruising and nosebleeds occur increasingly as the cirrhosis worsens, and portal hypertension (high pressure of venous blood circulation through the liver) develops due to abnormal vascular resistance. ASCITES and HEPATIC ENCEPHALOPATHY are indications of advanced cirrhosis.

Treatment of cirrhosis is to tackle the underlying cause, to maintain the patient’s nutrition (advising him or her to avoid alcohol), and to treat any complications. The disorder can also be treated by liver transplantation; indeed, 75 per cent of liver transplants are done for cirrhosis. The overall prognosis of cirrhosis, however, is not good, especially as many patients attend for medical care late in the course of the disease. Overall, only 25 per cent of patients live for ?ve years after diagnosis, though patients who have a liver transplant and survive for a year (80 per cent do) have a good prognosis.

Autoimmune hepatitis is a type that most commonly occurs in women between 20 and 40 years of age. The cause is unknown and it has been suggested that the disease has several immunological subtypes. Symptoms are similar to other viral hepatitis infections, with painful joints and AMENORRHOEA as additional symptoms. Jaundice and signs of chronic liver disease usually occur. Treatment with CORTICOSTEROIDS is life-saving in autoimmune hepatitis, and maintenance treatment may be needed for two years or more. Remissions and exacerbations are typical, and most patients eventually develop cirrhosis, with 50 per cent of victims dying of liver failure if not treated. This ?gure falls to 10 per cent in treated patients.

Viral hepatitis The ?ve hepatic viruses (A to E) all cause acute primary liver disease, though each belongs to a separate group of viruses.

•Hepatitis A virus (HAV) is an ENTEROVIRUS

which is very infectious, spreading by faecal contamination from patients suffering from (or incubating) the infection; victims excrete viruses into the faeces for around ?ve weeks during incubation and development of the disease. Overcrowding and poor sanitation help to spread hepatitis A, which fortunately usually causes only mild disease.

Hepatitis B (HBV) is caused by a hepadna virus, and humans are the only reservoir of infection, with blood the main agent for transferring it. Transfusions of infected blood or blood products, and injections using contaminated needles (common among habitual drug abusers), are common modes of transfer. Tattooing and ACUPUNCTURE may spread hepatitis B unless high standards of sterilisation are maintained. Sexual intercourse, particularly between male homosexuals, is a signi?cant infection route.

Hepatitis C (HCV) is a ?avivirus whose source of infection is usually via blood contacts. E?ective screening of blood donors and heat treatment of blood factors should prevent the spread of this infection, which becomes chronic in about 75 per cent of those infected, lasting for life. Although most carriers do not suffer an acute illness, they must practise life-long preventive measures.

Hepatitis D (HDV) cannot survive independently, needing HBV to replicate, so its sources and methods of spread are similar to the B virus. HDV can infect people at the same time as HBV, but it is capable of superinfecting those who are already chronic carriers of the B virus. Acute and chronic infection of HDV can occur, depending on individual circumstances, and parenteral drug abuse spreads the infection. The disease occurs worldwide, being endemic in Africa, South America and the Mediterranean littoral.

Hepatitis E virus (HEV) is excreted in the stools, spreading via the faeco-oral route. It causes large epidemics of water-borne hepatitis and ?ourishes wherever there is poor sanitation. It resembles acute HAV infection and the patient usually recovers. HEV does not cause chronic infection. The clinical characteristics of the ?ve hepatic

viruses are broadly similar. The initial symptoms last for up to two weeks (comprising temperature, headache and malaise), and JAUNDICE then develops, with anorexia, nausea, vomiting and diarrhoea common manifestations. Upper abdominal pain and a tender enlarged liver margin, accompanied by enlarged cervical lymph glands, are usual.

As well as blood tests to assess liver function, there are speci?c virological tests to identify the ?ve infective agents, and these are important contributions to diagnosis. However, there is no speci?c treatment of any of these infections. The more seriously ill patients may require hospital care, mainly to enable doctors to spot at an early stage those developing acute liver failure. If vomiting is a problem, intravenous ?uid and glucose can be given. Therapeutic drugs – especially sedatives and hypnotics – should be avoided, and alcohol must not be taken during the acute phase. Interferon is the only licensed drug for the treatment of chronic hepatitis B, but this is used with care.

Otherwise-?t patients under 40 with acute viral hepatitis have a mortality rate of around

0.5 per cent; for those over 60, this ?gure is around 3 per cent. Up to 95 per cent of adults with acute HBV infection recover fully but the rest may develop life-long chronic hepatitis, particularly those who are immunode?cient (see IMMUNODEFICIENCY).

Infection is best prevented by good living conditions. HVA and HVB can be prevented by active immunisation with vaccines. There is no vaccine available for viruses C, D and E, although HDV is e?ectively prevented by immunisation against HBV. At-risk groups who should be vaccinated against HBV include:

Parenteral drug abusers.

Close contacts of infected individuals such as regular sexual partners and infants of infected mothers.

Men who have sex with men.

Patients undergoing regular haemodialysis.

Selected health professionals, including laboratory sta? dealing with blood samples and products.... hepatitis

Meningitis

In?ammation affecting the membranes of the BRAIN or SPINAL CORD, or usually both. Meningitis may be caused by BACTERIA, viruses (see VIRUS), fungi, malignant cells or blood (after SUBARACHNOID HAEMORRHAGE). The term is, however, usually restricted to in?ammation due to a bacterium or virus. Viral meningitis is normally a mild, self-limiting infection of a few days’ duration; it is the most common cause of meningitis but usually results in complete recovery and requires no speci?c treatment. Usually a less serious infection than the bacterial variety, it does, however, rarely cause associated ENCEPHALITIS, which is a potentially dangerous illness. A range of viruses can cause meningitis, including: ENTEROVIRUSES; those causing MUMPS, INFLUENZA and HERPES SIMPLEX; and HIV.

Bacterial meningitis is life-threatening: in the United Kingdom, 5–10 per cent of children who contract the disease may die. Most cases of acute bacterial meningitis in the UK are caused by two bacteria: Neisseria meningitidis (meningococcus), and Streptococcus pneumoniae (pneumococcus); other bacteria include Haemophilus in?uenzae (a common cause until virtually wiped out by immunisation), Escherichia coli, Mycobacterium tuberculosis (see TUBERCULOSIS), Treponema pallidum (see SYPHILIS) and Staphylococci spp. Of the bacterial infections, meningococcal group B is the type that causes a large number of cases in the UK, while group A is less common.

Bacterial meningitis may occur by spread from nearby infected foci such as the nasopharynx, middle ear, mastoid and sinuses (see EAR, DISEASES OF). Direct infection may be the result of penetrating injuries of the skull from accidents or gunshot wounds. Meningitis may also be a complication of neurosurgery despite careful aseptic precautions. Immuno-compromised patients – those with AIDS or on CYTOTOXIC drugs – are vulnerable to infections.

Spread to contacts may occur in schools and similar communities. Many people harbour the meningococcus without developing meningitis. In recent years small clusters of cases, mainly in schoolchildren and young people at college, have occurred in Britain.

Symptoms include malaise accompanied by fever, severe headache, PHOTOPHOBIA, vomiting, irritability, rigors, drowsiness and neurological disturbances. Neck sti?ness and a positive KERNIG’S SIGN appearing within a few hours of infection are key diagnostic signs. Meningococcal and pneumococcal meningitis may co-exist with SEPTICAEMIA, a much more serious condition in terms of death rate or organ damage and which constitutes a grave emergency demanding rapid treatment.

Diagnosis and treatment are urgent and, if bacterial meningitis is suspected, antibiotic treatment should be started even before laboratory con?rmation of the infection. Analysis of the CEREBROSPINAL FLUID (CSF) by means of a LUMBAR PUNCTURE is an essential step in diagnosis, except in patients for whom the test would be dangerous as they have signs of raised intracranial pressure. The CSF is clear or turbid in viral meningitis, turbid or viscous in tuberculous infection and turbulent or purulent when meningococci or staphylococci are the infective agents. Cell counts and biochemical make-up of the CSF are other diagnostic pointers. Serological tests are done to identify possible syphilitic infection, which is now rare in Britain.

Patients with suspected meningitis should be admitted to hospital quickly. General pracitioners are encouraged to give a dose of intramuscular penicillin before sending the child to hospital. Treatment in hospital is usually with a cephalosporin, such as ceftazidime or ceftriaxone. Once the sensitivity of the organism is known as a result of laboratory studies on CSF and blood, this may be changed to penicillin or, in the case of H. in?uenzae, to amoxicillin. Local infections such as SINUSITIS or middle-ear infection require treatment, and appropriate surgery for skull fractures or meningeal tears should be carried out as necessary. Tuberculous meningitis is treated for at least nine months with anti-tuberculous drugs (see TUBERCULOSIS). If bacterial meningitis causes CONVULSIONS, these can be controlled with diazepam (see TRANQUILLISERS; BENZODIAZEPINES) and ANALGESICS will be required for the severe headache.

Coexisting septicaemia may require full intensive care with close attention to intravenous ?uid and electrolyte balance, control of blood clotting and blood pressure.

Treatment of close contacts such as family, school friends, medical and nursing sta? is recommended if the patient has H. in?uenzae or N. meningitidis: RIFAMPICIN provides e?ective prophylaxis. Contacts of patients with pneumococcal infection do not need preventive treatment. Vaccines for meningococcal meningitis may be given to family members in small epidemics and to any contacts who are especially at risk such as infants, the elderly and immuno-compromised individuals.

The outlook for a patient with bacterial meningitis depends upon age – the young and old are vulnerable; speed of onset – sudden onset worsens the prognosis; and how quickly treatment is started – hence the urgency of diagnosis and admission to hospital. Recent research has shown that children who suffer meningitis in their ?rst year of life are ten times more likely to develop moderate or severe disability by the age of ?ve than contemporaries who have not been infected. (See British Medical Journal, 8 September 2001, page 523.)

Prevention One type of bacterial meningitis, that caused by Haemophilus, has been largely controlled by IMMUNISATION; meningococcal C vaccine has largely prevented this type of the disease in the UK. So far, no vaccine against group B has been developed, but research continues. Information on meningitis can be obtained from the Meningitis Trust and the Meningitis Research Foundation.... meningitis

Acute Fatty Liver Of Pregnancy

a rare and life-threatening complication of pregnancy that usually presents in the third trimester with symptoms of nausea, vomiting, malaise, and abdominal pain. Liver function tests are abnormal and the features of *pre-eclampsia and often *HELLP syndrome are present. *Hepatic encephalopathy, *disseminated intravascular coagulation, and renal failure may develop, and the condition is associated with a high maternal and fetal mortality. Treatment involves a multidisciplinary approach, usually in an intensive care unit.... acute fatty liver of pregnancy

Azathioprine

n. an *immunosuppressant drug, used mainly to aid the survival of organ or tissue transplants. It may also be used in the treatment of severe Crohn’s disease, rheumatoid arthritis (see disease-modifying antirheumatic drug), myasthenia gravis, and severe eczema. Azathioprine may damage bone marrow, causing blood disorders; other possible side-effects include nausea and vomiting, malaise, muscle pain, and skin rashes.... azathioprine

Bagassosis

n. a form of external allergic *alveolitis caused by exposure to the dust of mouldy bagasse, the residue of sugar cane after the sugar has been extracted, which is used in the production of hardboard and other thermal boards. Symptoms usually appear in the evening after exposure during the day and include fever, malaise, irritant cough, and respiratory distress.... bagassosis

Mmr Vaccine

A combined vaccine o?ering protection against MEASLES, MUMPS and RUBELLA (German measles), it was introduced in the UK in 1988 and has now replaced the measles vaccine. The combined vaccine is o?ered to all infants in their second year; health authorities have an obligation to ensure that all children have received the vaccine by school entry – it should be given with the pre-school booster doses against DIPHTHERIA, TETANUS and POLIOMYELITIS, if not earlier – unless there is a valid contra-indication (such as partial immunosuppression), parental refusal, or evidence of previous infection. MMR vaccine may also be used in the control of measles outbreaks, if o?ered to susceptible children within three days of exposure to infection. The vaccine is e?ective and generally safe, though minor symptoms such as malaise, fever and rash may occur 5–10 days after immunisation. The incidence of all three diseases has dropped substantially since MMR was introduced in the UK and USA.

A researcher has suggested a link between the vaccine and AUTISM, but massive studies of children with and without this condition in several countries have failed to ?nd any evidence to back the claim. Nonetheless, the publicity war has been largely lost by the UK health departments so that vaccine rates have dropped to a worryingly low level.

(See IMMUNISATION.)... mmr vaccine

Stress

Any factor or event that threatens a person’s health or adversely affects his or her normal functioning. Injury, disease or worry are common examples; others include internal con?icts, emotive life events – such as the death of a close relative or friend, the birth of a baby, separation or divorce – pressures at work or a hostile environment such as war or famine. Some individuals seem to be more prone than others to develop medical problems related to stress.

Stress prompts the body to raise its output of HORMONES such as ADRENALINE and CORTISOL, causing changes in blood pressure, heart rate and metabolism. These are physiological responses intended to improve a person’s physical and mental performance – the ‘?ght or ?ight’ reaction to fear. Stress may, however, disrupt the ability to cope. Constant or recurrent exposure to stress may produce symptoms such as anxiety, depression, headaches, indigestion, diarrhoea, palpitations and general malaise (see POST-TRAUMATIC STRESS DISORDER (PTSD)). Treatment can be di?cult and prolonged; counselling can help as can ANXIOLYTICS or ANTIDEPRESSANT DRUGS – but a change in job or lifestyle may be necessary in some circumstances.... stress

Tonsillitis

Tonsillitis is the in?ammation of the TONSILS. The disorder may be the precurosor of a virus-induced infection of the upper respiratory tract such as the COMMON COLD, INFLUENZA or infectious MONONUCLEOSIS, in which case the in?ammation usually subsides as other symptoms develop. Such virus-induced tonsillitis does not respond to treatment with antibiotics. This section describes tonsillitis caused by bacterial infection.

Acute tonsillitis The infection is never entirely con?ned to the tonsils; there is always some involvement of the surrounding throat or pharynx. The converse is true that in many cases of ‘sore throat’, the tonsils are involved in the generalised in?ammation of the throat.

Causes Most commonly caused by the ?haemolytic STREPTOCOCCUS, its incidence is highest in the winter months. In the developing world it may be the presenting feature of DIPHTHERIA, a disease now virtually non-existant in the West since the introduction of IMMUNISATION.

Symptoms The onset is usually fairly sudden with pain on swallowing, fever and malaise. On examination, the tonsils are engorged and covered with a whitish discharge (PUS). This may occur at scattered areas over the tonsillar crypts (follicular tonsillitis), or it may be more extensive. The glands under the jaw are enlarged and tender, and there may be pain in the ear on the affected side: although usually referred pain, this may indicate spread of the infection up the Eustachian tube to the ear, particularly in children. Occasionally an ABSCESS, or quinsy, develops around the affected tonsil. Due to a collection of pus, it usually comes on four to ?ve days after the onset of the disease, and requires specialist surgical treatment.

Treatment Most cases need no treatment. Therefore, it is advisable to take a throat swab to assess the nature of any bacterial treatment before starting treatment. Penicillin or erythromycin are the drugs of choice where betahaemolytic streptococci are isolated, together with paracetamol or aspirin, and plenty of ?uids. Removal of tonsils is indicated: when the tonsils and adenoids are permanently so enlarged as to interfere with breathing (in such cases the adenoids are removed as well as the tonsils); when the individual is subject to recurrent attacks of acute tonsillitis which are causing signi?cant debility, absence from school or work on a regular basis (more than four times a year); when there is evidence of a tumour of the tonsil. Recurrent sore throat is not an indication for removing tonsils.... tonsillitis

Cat-scratch Disease

an infectious disease caused by the bacterium *Bartonella henselae, which infects cats and is transmitted to humans by a cat scratch or bite. A papule or pustule develops at the site of the injury followed, a week to two months after infection, by swelling of the lymph nodes (usually those closest to the wound). Fever and malaise are common. The condition usually resolves without treatment but antibiotics may be given to prevent complications.... cat-scratch disease

Cold

(common cold) n. a widespread infectious virus disease causing inflammation of the mucous membranes of the nose, throat, and bronchial tubes. The disease is transmitted by coughing and sneezing. Symptoms commence 1–2 days after infection and include a sore throat, stuffy or runny nose, headache, cough, and general malaise. The disease is mild and lasts only about a week but it can prove serious to young babies and to patients with a pre-existing respiratory complaint.... cold

Diethylcarbamazine

n. an anthelmintic drug that destroys filariae and is therefore used in the treatment of filariasis and loiasis. Side-effects may include headache, malaise, joint pains, nausea, and vomiting.... diethylcarbamazine

Dress

drug reaction with eosinophilia and systemic symptoms: a potentially fatal reaction to medications, also called anticonvulsant and drug-induced hypersensitivity syndrome. It is characterized by a nonspecific skin rash and variable other symptoms, such as fever, lymphadenopathy, full blood count abnormalities, organ (e.g. liver) dysfunction, and malaise. Common drug culprits include anticonvulsants and antibiotics, although many others have been reported to cause it. Prompt withdrawal of the suspected drug is critical for recovery, but sometimes the reaction can be prolonged, even after drug withdrawal.... dress

Vaccine

The name applied generally to dead or attenuated living infectious material introduced into the body, with the object of increasing its power to resist or to get rid of a disease. (See also IMMUNITY.)

Healthy people are inoculated with vaccine as a protection against a particular disease; this produces ANTIBODIES which will confer immunity against a subsequent attack of the disease. (See IMMUNISATION for programme of immunisation during childhood.)

Vaccines may be divided into two classes: stock vaccines, prepared from micro-organisms known to cause a particular disease and kept in readiness for use against that disease; and autogenous vaccines, prepared from microorganisms which are already in the patient’s body and to which the disease is due. Vaccines intended to protect against the onset of disease are of the former variety.

Autogenous vaccines are prepared by cultivating bacteria found in SPUTUM, URINE and FAECES, and in areas of in?ammation such as BOILS (FURUNCULOSIS). This type of vaccine was introduced by Wright about 1903.

Anthrax vaccine was introduced in 1882 for the protection of sheep and cattle against this disease. A safe and e?ective vaccine for use in human beings has now been evolved. (See ANTHRAX.)

BCG vaccine is used to provide protection against TUBERCULOSIS. (See also separate entry on BCG VACCINE.)

Cholera vaccine was introduced in India about 1894. Two injections are given at an interval of at least a week; this gives a varying degree of immunity for six months. (See CHOLERA.)

Diphtheria vaccine is available in several forms. It is usually given along with tetanus and pertussis vaccine (see below) in what is known as TRIPLE VACCINE. This is given in three doses: the ?rst at the age of two months; the second at three months; and the third at four months, with a booster dose at the age of ?ve years. (See DIPHTHERIA.)

Hay fever vaccine is a vaccine prepared from the pollen of various grasses. It is used in gradually increasing doses for prevention of HAY FEVER in those susceptible to this condition.

In?uenza vaccine A vaccine is now available for protection against INFLUENZA due to the in?uenza viruses A and B. Its use in Britain is customarily based on advice from the health departments according to the type of in?uenza expected in a particular year.

Measles, mumps and rubella (MMR) vaccines are given in combination early in the second year of life. A booster dose may prove necessary, as there is some interference between this vaccine and the most recent form of pertussis vaccine (see below) o?ered to children. Uptake has declined a little because of media reports suggesting a link with AUTISM – for which no reliable medical evidence (and much to the contrary) has been found by investigating epidemiologists. (See also separate entry for each disease, and for MMR VACCINE.)

Pertussis (whooping-cough) vaccine is prepared from Bordetella pertussis, and is usually given along with diphtheria and tetanus in what is known as triple vaccine. (See also WHOOPING-COUGH.)

Plague vaccine was introduced by Ha?kine, and appears to give useful protection, but the duration of protection is relatively short: from two to 20 months. Two injections are given at an interval of four weeks. A reinforcing dose should be given annually to anyone exposed to PLAGUE.

Poliomyelitis vaccine gives a high degree of protection against the disease. This is given in the form of attenuated Sabin vaccine which is taken by mouth – a few drops on a lump of sugar. Reinforcing doses of polio vaccine are recommended on school entry, on leaving school, and on travel abroad to countries where POLIOMYELITIS is ENDEMIC.

Rabies vaccine was introduced by Pasteur in 1885 for administration, during the long incubation period, to people bitten by a mad dog, in order to prevent the disease from developing. (See RABIES.)

Rubella vaccine, usually given with mumps and measles vaccine in one dose – called MMR VACCINE, see also above – now provides protection against RUBELLA (German measles). It also provides immunity for adolescent girls who have not had the disease in childhood and so ensures that they will not acquire the disease during any subsequent pregnancy – thus reducing the number of congenitally abnormal children whose abnormality is the result of their being infected with rubella via their mothers before they were born.

Smallpox vaccine was the ?rst introduced. As a result of the World Health Organisation’s successful smallpox eradication campaign – it declared the disease eradicated in 1980 – there is now no medical justi?cation for smallpox vaccination. Recently, however, there has been increased interest in the subject because of the potential threat from bioterrorism. (See also VACCINATION.)

Tetanus vaccine is given in two forms: (1) In the so-called triple vaccine, combined with diphtheria and pertussis (whooping-cough) vaccine for the routine immunisation of children (see above). (2) By itself to adults who have not been immunised in childhood and who are particularly exposed to the risk of TETANUS, such as soldiers and agricultural workers.

Typhoid vaccine was introduced by Wright and Semple for the protection of troops in the South African War and in India. TAB vaccine, containing Salmonella typhi (the causative organism of typhoid fever – see ENTERIC FEVER) and Salmonella paratyphi A and B (the organisms of paratyphoid fever – see ENTERIC FEVER) has now been replaced by typhoid monovalent vaccine, containing only S. typhi. The change has been made because the monovalent vaccine is less likely to produce painful arms and general malaise, and there is no evidence that the TAB vaccine gave any protection against paratyphoid fever. Two doses are given at an interval of 4–6 weeks, and give protection for 1–3 years.... vaccine

Eczema Herpeticum

(Kaposi’s varicelliform eruption) a skin eruption, typically in children or young adults, of widespread *vesicles and ulcers caused by *herpes simplex. This is due to impaired barrier function in skin with eczema. Clinical features include fever, malaise, and lymphadenopathy. Rarely, the infection may become systemic and be life-threatening. Eczema herpeticum is commonly misdiagnosed as a bacterial infection. Treatment is with systemic antivirals and hospitalization may be required.... eczema herpeticum

Herpangina

n. an acute viral infection, occurring predominantly in children, that causes a fever of sudden onset associated with malaise and acute ulceration of the soft palate and tonsillar area. It usually lasts 2–5 days.... herpangina

Legionnaires’ Disease

an infection of the lungs caused by the bacterium Legionella pneumophila, named after an outbreak at the American Legion convention in Pennsylvania in 1976. Legionella organisms are widely found in water; outbreaks of the disease have been associated with defective central heating, air conditioning, and other ventilating systems. Symptoms appear after an incubation period of 2–10 days: malaise and muscle pain are succeeded by a fever, dry cough, chest pain, and breathlessness. X-ray of the lungs shows patchy consolidation. Erythromycin provides the most effective therapy.... legionnaires’ disease

Yaws

A non-venereal spirochaetal infection caused by Treponema pertenue ; it was formerly widespread in most tropical and subtropical regions amongst the indigenous population, ?orid disease being more common in children than adults. The term is of Carib-Indian (native to north-eastern South America, the east coast of Central America, and the lesser Antilles) origin. It is directly contagious from person to person; infection is also transmitted by ?ies, clothing, and living in unclean huts. Clinically, the primary stage is characterised by a granulomatous lesion, or papule (framboesioma or ‘mother yaw’) at the site of infection – usually the lower leg or foot; this enlarges, crusts, and heals spontaneously. It appears some 2–8 weeks after infection, during which time fever, malaise, pains, and pruritus may be present. In the secondary stage, a granulomatous, papular, macular or squamous eruption occurs; periostitis may also be present. The late, or tertiary stage (which appears 5–10 years later), is characterised by skin plaques, nodules, ulcers, hyperkeratosis (thickening of the skin of the hands and feet) and gummatous lesions affecting bones. Recurrence of infection in individuals suffering from a concurrent infection (e.g. SYPHILIS or TUBERCULOSIS) renders the infection more serious. Diagnosis is by demonstration of T. pertenue in exudate from a suspected lesion. Treatment is with PENICILLIN, to which T. pertenue is highly sensitive. Extensive eradication campaigns (initiated by the WHO in 1949) have been carried out in endemic areas; therefore, the early stages of the infection are rarely counted; only tertiary stages come to the attention of a physician. Failure of surveillance can lead to dramatic local recurrences.... yaws

Cinnamon, Chinese

 Cassia bark. Cinnamomum cassia Blume.

Action: antispasmodic, antidiarrhoeal, antimicrobial, anti-emetic, carminative, anti-putrescent, aromatic, febrifuge, mild analgesic.

Uses: Flatulent dyspepsia, colic, irritable bowel, diverticulosis. Influenza and colds. Leucorrhoea (5 drops oil in honey before meals). Lung affections: chest rub. Loss of weight and malaise. Deficiency of stomach acid. Snakebite.

Preparations: Thrice daily, or more frequently in acute cases.

Tea: Quarter to half a teaspoon in each cup boiling water, hot tea or other beverage.

Tincture BPC (1949). Dose 30-60 drops (2-4ml).

Inhalant: Inhale steam from 20-30 drops oil or essence in 1 pint boiling water, with head covered. Chest-rub. 5 drops oil in 2 teaspoons Almond or Olive oil.

Not a front-line remedy. Much used to flavour medicines and toothpastes. Avoid in pregnancy. Combines well with Ginger (equal parts). ... cinnamon, chinese

Lepra Reaction

an aggravation of lumps on the skin caused by *leprosy, accompanied by fever and malaise.... lepra reaction

Marburg Disease

(green monkey disease) a virus disease of vervet (green) monkeys transmitted to humans by contact (usually in laboratories) with blood or tissues from an infected animal. It was first described in Marburg, Germany. Symptoms include fever, malaise, severe headache, vomiting, diarrhoea and bleeding from mucous membranes in the mouth and elsewhere. Treatment with antiserum and measures to reduce the bleeding are sometimes effective.... marburg disease

Shunt Nephritis

nephritis associated with infected indwelling shunts. The infection is usually with staphylococci (S. epidermidis) and patients present with anorexia, malaise, arthralgia, and low-grade fever. Purpura, anaemia, and hepatosplenomegaly may be found and urine analysis shows heavy proteinuria, often with a *nephrotic syndrome and haematuria. Treatment usually involves removal of the infected shunt as well as antibiotics.... shunt nephritis

Colds

The common cold. A virus droplet infection of the air passages.

Symptoms: Red itching eyes, clear nasal discharge progressing to yellow and thick, slight sore throat, sneezing, mild fever, headache, blocked or running nose, malaise.

The alternative school of medicine believes a cold should not be suppressed with popular drugs of the day but allowed to run its course. That course may be dramatically reduced by use of herbs. A cold is sometimes an acute healing crisis in which Nature expels accumulated wastes and toxins. Diaphoretics promote sweating, aiding this process.

Alternatives. Teas may be made from any of the following: Elderflowers, Peppermint, Catmint, Bayberry, Boneset, White Horehound, Feverfew, St John’s Wort.

Alternatives. Formulae:– Equal parts:– (1) Elderflowers and Peppermint. (2) Yarrow and Peppermint. (3) White Horehound and Hyssop. 1 teaspoon to each cup boiling water; infuse 5-15 minutes. 1 cup freely. A trace of Cayenne Pepper enhances potency and stimulates circulation.

Decoction. Prepared from Horseradish, Pleurisy root, Prickly Ash, Bayberry. Teaspoon, of any one, to two cups water gently simmered 20 minutes. Half-1 cup freely. Pinch of Cayenne enhances action.

Irish Moss. 1 teaspoon to 2 cups water simmered gently 20 minutes. Do not strain. Eat with a spoon with honey.

Powders. Composition. 1 teaspoon to cup of tea, or hot drink.

Powders. Formula. Bayberry bark 2; Ginger 1; Pleurisy root 1. Cayenne quarter. Sift. 500mg (two 00 capsules or one-third teaspoon) thrice daily.

Tablets/capsules. Lobelia. Iceland Moss. Vitamin C. Feverfew.

Essence of Cinnamon. Popular traditional herbal expectorant to help relieve symptoms of cold and flu. Composition essence and Elderflowers and Peppermint. 2 teaspoons in hot water or cup of tea every 3 hours. Children less according to age.

Life Drops. See entry.

Practitioner. Colds with fever, cardiac excitability and distress out of all proportion to the infection: Tincture Gelsemium, 3-5 drops.

Laxative. A mild laxative may be advised (5-7 Senna pods, infused in cup of boiling water, or Senacot). A healthy bowel movement may cut short a cold by assisting elimination.

Aromatherapy. Few drops of any of the following antiseptic oils added to a bowl of boiling water, head covered with a towel, steam inhaled: Eucalyptus, Peppermint, Marjoram, Thyme, Niaouli. Oil of Camphor is most effective, but as it antidotes all other medicaments, should be used alone. Oil of Scots Pine (5-10 drops) used in bath. Tiger Balm. Olbas oil.

Diet. 3-day fast; no solid food, herb teas and fruit juices only. Citrus fruits (Vitamin C) in abundance. Hot lemon and honey.

Supplementation. Daily. Vitamin A (7500iu), B-complex (50mg), C (3 grams at onset: 2 grams every 3 hours thereafter).

Prophylaxis, winter months. Daily: Vitamin C (Rose Hip, Acerola, etc), Echinacea. 2 Garlic capsules at night to build-up body’s resistance. ... colds

Crohn’s Disease

Chronic inflammation and ulceration of the gut, especially the terminal ileum from changes in the gut blood vessels. Commences with ulceration which deepens, becomes fibrotic and leads to stricture. Defective immune system. Resistance low. May be associated with eye conditions and Vitamin B12 deficiency.

Symptoms: malaise, bloody alternating diarrhoea and constipation; right side colicky abdominal pain worse after meals; flatulence, loss of weight and appetite. Intestinal obstruction can usually be palpated. Blood count. A blood count high in whites indicates an abscess – a serious condition which may require surgical repair during which segments of the gut may have to be removed. Malignant change rare. Differential diagnosis. Ulcerative colitis, appendicitis, appendix abscess, irritable bowel syndrome.

Cracks or ulcers at corners of the mouth may be a good marker of Crohn’s Disease.

Treatment. Select one of the following. Herbal treatment offers a safe alternative to steroids by inducing remission in acute exacerbation. Good responses have been observed from the anti-bacterials Wild Yam and Goldenseal. Fenugreek seeds are of special value. Comfrey (tissue regeneration). Irish Moss.

Teas: Chamomile, Comfrey leaves, Hops, Marshmallow leaves, Meadowsweet, Shepherd’s Purse (Dr A. Vogel), Lobelia. Silverweed and Cranesbill are excellent for internal bleeding; Poke root for intestinal ulceration.

Decoction. Fenugreek seeds: 2 teaspoons to large cup water simmered gently 10 minutes. 1 cup freely. The seeds also should be consumed.

Tablets/capsules. Wild Yam, Fenugreek, Ginger, Goldenseal, Lobelia, Slippery Elm.

Powders. Formula. Wild Yam 2; Meadowsweet 2; Goldenseal 1. Dose: 500mg (two 00 capsules or one- third teaspoon) thrice daily.

Liquid Extracts. (1) Formula. Wild Yam 1, Echinacea 2. 30-60 drops in water thrice daily. Or, (2) Formula: Turkey Rhubarb 2, Goldenseal 1, Caraway half. 20-30 drops in water thrice daily.

Tinctures. Formula. Bayberry 2, Goldenseal 1, Cardamoms 1. Dose: One to two 5ml teaspoons thrice daily.

Ispaghula seeds. 2-4 teaspoons thrice daily.

Tea Tree oil Suppositories. Insertion at night.

Diet. Bland, little fibre, Slippery Elm gruel. Irish Moss preparations. Increase fluid intake. Reject: broccoli, tomatoes, lima, Soya, Brussels sprouts, pinto beans, cocoa, chocolate, cow’s milk, peas, onions, turnips, radishes. Accept fish oils.

Addenbrookes Hospital, Cambridge. Reject foods containing wheat and all dairy produce.

Supplements. Vitamins A, B12, C, Calcium, Iron, Magnesium, Potassium, Zinc.

Study. In a study carried out by UK researchers (1993) food allergies were found to be the most common cause of the disease. Results suggested that dietary changes may be as effective as corticosteroids in easing symptoms. The most common allergens were corn, wheat, milk, yeast, egg, potato, rye, tea, coffee, apples, mushrooms, oats, chocolate. An elemental diet with a formula of nutrients (E028, produced by Hospital Supplies, Liverpool) was used in trials. (The Lancet, 6.11.1993)

Notes. Crohn’s Disease is associated with Erythema nodosum, more frequently recognised in childhood. A frequent cause is cow’s milk intolerance. Smoking adds to the risk of Crohn’s disease.

In susceptible people, the food additives titanium dioxide and aluminosilicates may evoke a latent inflammatory response resulting in Crohn’s disease, ulcerative colitis or bowel cancer. These chemicals may be found in the intestinal lymphoid aggregations in gut mucosa. (Jonathan Powell, Gastro-intestinal Laboratory, St Thomas’s Hospital, London) (Titanium dioxide rarely occurs naturally but is added to confectionery, drinking water and anti-caking agents.) ... crohn’s disease

Diagnosis

The specific disease or other condition defined after investigation has taken into consideration all the facts, evidence and information bearing on the case.

The practice of medicine, orthodox or alternative, is beset by many variables. Care should be taken not to assume that the obvious clinical findings are the cause of the symptoms; but to look deeper. The danger comes when a patient or practitioner is persuaded to ignore dangerous symptoms. If the malaise associated with a progressive disease like cancer is not properly investigated, then when it is eventually recognised in its later stages it may be more difficult to treat.

Accurate diagnosis is the touchstone of correct treatment. The modern herbalist will employ basic medical techniques as supported by examinations of the blood, urine and other body fluids carried out by the pathological, haematological or other specialist ancillary service in a modern hospital.

Immediate reduction of symptoms often indicates an absence of deep-seated disease. (Dr J.T. Kent) It is sometimes necessary to remove a small sample of tissue (biopsy) for further tests. It is good when disease moves from the inside to the outside (skin).

When in doubt, alternative practitioners should not hesitate to seek a second opinion, preferably from a competent independent medical practitioner. The safety of a second brain engaged on the problem reduces the risk of incorrect treatment. ... diagnosis

Diphtheria

An acute infectious disease caused by Gram positive Corynebacterium diphtheria by droplet infection. Incubation: 2-4 days. Isolation.

Symptoms: low grade fever, malaise, sore throat, massive swelling of cervical lymph glands, thick white exudate from tonsils, false membrane forms from soft palate to larynx with brassy cough and difficult breathing leading to cyanosis and coma. Toxaemia, prostration, thin rapid pulse. Throat swabs taken for laboratory examination. See: NOTIFIABLE DISEASES.

Treatment. Bedrest. Encourage sweating.

Recommendations are for those parts of the world where medical help is not readily available and may save lives. Alternatives:–

1. Combine: Tincture Echinacea 3; Tincture Goldenseal 2; Tincture Myrrh 1. Dose: 30-60 drops in water, two-hourly.

2. Combine equal parts: Tincture Lobelia; Tincture Echinacea. Dose: 30-60 drops in water, two-hourly.

3. Combine Tincture Poke root 2; Tincture Echinacea 3. Dose: 30-60 drops in water, two hourly.

4. G.L.B. Rounseville, MD, Ill., USA. I have treated diphtheria since 1883. I have treated diphtheria until I am sure the number of cases treated run into four digits. I have never given a hypodermic of antitoxin on my own initiative, nor have I ever lost a case early enough to inhibit conditions. I have depended upon Echinacea not only prophylactic but also as an antiseptic . . . In the line of medication the remedies are: Aconite, Belladonna, Poke root and Cactus grand, according to indications. But remember, if you are to have success, Echinacea must be given internally, externally and eternally! Do not fear any case of diphtheria with properly selected remedies as the symptoms occur. Echinacea will also be your stimulant, diaphoretic, diuretic, sialogogue, cathartic and antipyretic. (Ellingwood’s Physiomedicalist, Vol 13, No 6, June, 1919, 202)

5. Alexander M. Stern MD, Palatka, Florida, USA. Combine: tinctures Echinacea 1oz, Belladonna 10 drops, Aconite 10 drops. Water to 4oz. 1 teaspoon 2-hourly.

6. F.H. Williams, MD, Bristol, Conn., USA. I took a case which had been given up to die with tracheal diphtheritic croup. I gave him old-fashioned Lobelia (2) seed and Capsicum (1) internally and externally and secured expulsion of a perfect cast of the trachea without a tracheotomy.

7. Gargle, and frequent drink. To loosen false membrane. Raw lemon juice 1, water 2. Pineapple juice. Teas: Red Sage, fresh Poke root. Cold packs – saturated with Echinacea (Tincture, Liquid Extract or decoction) to throat.

Note: Capsicum and Lobelia open up the surface blood flow of the body thus releasing congestion on the inner mucous membranes.

Diet. Complete lemon-juice and herb tea fast with no solid foods as long as crisis lasts.

To be treated by a general medical practitioner or hospital specialist. ... diphtheria

Glandular Fever

Mononucleosis. An infectious viral disease caused by a herpes virus (Epstein Barr). Spread by saliva, nasal secretion as in kissing. Most commonly young adults, 15-25. Incubation 10- 15 days.

Symptoms. Mild fever, sore throat, headache, tiredness, malaise, swelling of glands under arm and in neck. These progress to high fever with painful lymph nodes. Puffiness of upper eyelids.

Treatment. Bedrest, when febrile.

Alternatives:– Echinacea, Eucalyptus, Garlic, Mountain Grape, Myrrh, Poke root, Wild Indigo, Wormwood, Elecampane, Blue Flag root.

Tea. Yarrow or Elder – early stages of fever in children.

Decoction: Formula. Equal parts, Echinacea, Blue Flag root. Half an ounce to 1 pint water gently simmered 20 minutes. Half-1 cup every 3 hours, with pinch of Cayenne. Children: 5-12 years three- quarters dose.

Formula. Echinacea 2; Blue Flag 1; Goldenseal half; pinch Cayenne. Dose: Powders: 500mg (two 00 capsules or one-third teaspoon). Liquid Extracts: 1 teaspoon. Tinctures: 1-2 teaspoons. Thrice daily. Children 5-12 years – as many drops as years of age.

Convalescence. Give a general tonic. See: TONICS.

Garlic. 2 capsules at night.

Diet. Commence with 3-day fast with herb teas (Marigold petals, Red Clover or Yarrow) and fruit juices, followed by vegetarian, salt-free diet. Vitamin C, 1g morning and evening. Vitamin B-complex. Supplements. Daily. B-complex. Vitamin C 3g.

To be treated by or in liaison with a qualified medical practitioner. ... glandular fever

Laryngitis, Chronic

 The main symptom is hoarseness or loss of voice from malfunction of the vocal cords by disease, stroke, stress, or nerve disorder. Pain on speaking. “Raw throat.”

Constitutional disturbance: fever, malaise.

Many causes, including: drugs, drinking spirits. Gross mis-use of voice (singing or talking) may produce nodules (warts) on the cords. The smoker has inflammatory changes. Nerve paralysis in the elderly. Carcinoma of the larynx. Voice changes during menstruation are associated with hormonal changes (Agnus Castus). Professional singers, members of choirs benefit from Irish Moss, Iceland Moss, Slippery Elm or Poke root.

Alternatives. Cayenne, Caraway seed, Balm of Gilead, Lungwort, Queen’s Delight, Thyme, Wild Indigo, Marsh Cudweed, Mullein, Marshmallow.

For most infections: Equal parts, Tinctures Goldenseal and Myrrh: 3-5 drops in water 3-4 times daily; use also as a spray or gargle.

Tea. Formula. Equal parts: Mullein, Marshmallow root, Liquorice. 2 teaspoons to each cup water brought to boil; vessel removed on boiling. Drink freely.

Practitioner. Combine equal parts: Senega, Ipecacuanha and Squills (all BP). 5-10 drops thrice daily in water. Also gargle.

Poke root. Reliable standby. Decoction, tablets/capsules. Tincture: dose, 5-10 drops thrice daily in water or honey.

Topical. Aromatherapy. Steam inhalations. Oils: Bergamot, Eucalyptus, Niaouli, Geranium, Lavender, Sandalwood. Any one.

Diet. Slippery Elm gruel. Salt-free. Avoid fried foods.

Supplements. Daily. Vitamin A (7500iu). Vitamin C (1 gram thrice daily).

To prevent voice damage. The voice should not be strained by talking too much, shouting or singing – especially with a cold. Try not to cough or keep clearing the throat but instead, swallow firmly. Do not whisper – it will strain the voice.

A common cause of laryngitis is growth of a nodule, cyst or polyp on the vocal cords. They are visible on use of an endoscope. There are two vocal cords which, in speech, come together and vibrate like a reed in a musical instrument. In formation of a nodule they cannot meet, air escapes and the voice becomes hoarse. Relaxation technique.

Where the condition lasts for more than 4 weeks an ENT specialist should be consulted. ... laryngitis, chronic

Liver – Acute Infectious Hepatitis

Inflammation of the liver from virus infection. As the commonest form of liver disorder, it is often without jaundice or marked liver symptoms apart from general malaise and abdominal discomfort, ‘Gippy tummy’, ‘chill on the liver’. For feverishness, add a diaphoretic.

Treatment. Bitter herbs keep the bile fluid and flowing.

Alternatives. Teas. Agrimony, Lemon Balm, Boldo, Bogbean, Centuary, Dandelion, Hyssop, Motherwort, Wormwood, Yarrow.

Maria Treben. Equal parts: Bedstraw, Agrimony, Woodruff. 2 teaspoons to cup boiling water.

Cold tea: 2 teaspoons Barberry bark to each cup cold water. Infuse overnight. Half-1 cup freely. Tablets/capsules: Blue Flag. Dandelion. Wild Yam. Liquorice.

Formula. Equal parts: Turkey Rhubarb, Dandelion, Meadowsweet. Dose: Liquid Extracts: 1-2 teaspoons. Tinctures: 2-3 teaspoons. Powders: 500mg (two 00 capsules or one-third teaspoon). 3-4 times daily. Alfred Vogel. Dandelion, Devil’s Claw, Artichoke.

Antonius Musa, physician to Emperor Augustus Caesar records: “Wood Betony preserves the liver and bodies of men from infectious diseases”.

Preventative: Garlic. (Old Chinese)

Milk Thistle: good responses observed.

General. Bedrest until motions are normal. Enema with any one of above herb teas.

Diet. Fat-free. Fasting period from 1-3 days on fruit juices and herb teas only. Artichokes. Dandelion coffee. Lecithin.

See: COCKROACH, The.

Treatment by or in liaison with a general medical practitioner. ... liver – acute infectious hepatitis

Mastoiditis

An infection of the mastoid bone behind the ear, with possible destruction of bone. Usually due to extension of infection (streptococcal, etc) from the middle ear (otitis media) when that condition is wrongfully or neglectfully treated.

Symptoms: Mastoid bone behind the ear is tender to touch. Feverishness, red flush over mastoid area, deafness with throbbing earache, malaise, heavy discharge from the ear through perforated eardrum. Diagnostic sign: pinna (external ear) is displaced.

Treatment. Indicated: anti-microbials, anti-bacterials, alteratives with nervines as supportives. Yarrow tea.

Decoction. Combine: Echinacea 3; Wild Indigo 2; Poke root 1. 1 teaspoon to each cup water gently simmered 20 minutes. Half-1 cup every 2 hours with pinch of Cayenne.

Formula. Echinacea 2; Wild Indigo 1; Pulsatilla 1; few grains of Cayenne or Tincture Capsicum drops. Dose: Liquid Extracts: 30-60 drops (2-4ml). Tinctures: 4-8ml. Powders: 500mg (two 00 capsules or one- third teaspoon). Every 2 hours according to age. Children under 5 years – one-quarter dosage; under 12 years – half dosage.

Vitamin C. Copious fluids: fruit juices. Yarrow tea.

Topical. Goldenseal Ear Drops. Oil of Mullein, Sage or Lavender. Gentle massage with Tea Tree oil or Rosemary oil around the mastoid bone and in front of the ear 3/4 times daily.

Treatment by or in liaison with a general medical practitioner. ... mastoiditis

Mumps

Parotitis. Inflammation of the salivary glands with painful swelling in front of the ears, caused by a virus. Common, children. In adults, mumps may include inflammation of the testicles in men which may lead to sterility; or of the ovaries in women; or of the pancreas in both sexes. A notifiable disease. Symptoms: fever, malaise, headache, one or two days before sudden rise in temperature to about 40°C (104°F).

Treatment. Maintain adequate fluid intake.

Tea. Formula. Angelica 2; Centuary 1; Marigold 1. 2 teaspoons to each cup boiling water; infuse 15 minutes. Add pinch Cayenne. Quarter-1 cup every 2 hours, according to age. Where recovery is tardy, add 3-4 drops Spearmint oil.

With nervousness: add 1 part skullcap.

With swollen testicles or ovarian involvement: Agnus Castus.

Absence of urine: Yarrow.

Alternative formula:– Echinacea 2; Poke root 1; Yarrow 2. Dose: Liquid Extracts: one 5ml teaspoon. Tinctures: two 5ml teaspoons. Powders: 500mg (two 00 capsules or one-third teaspoon). Children: 1 drop for each year to age of 5; 2 drops thereafter to age of 10. Thrice daily.

Tablets/capsules. Poke root. Echinacea.

Malecite Indians: Cramp bark. Echinacea. Decoction.

European traditional. Balm tea, internally, half-1 cup freely. Externally to bathe face and genitals. Tinctures: Formula. Equal parts: Pulsatilla, Ginkgo, Vinca major. Adults: 1-2 teaspoons in water thrice daily. Children: 1 drop for each year to 5 years; thereafter 2 drops each year to 12.

Metastasis. Equal parts, Liquid Extracts. Pulsatilla (testes and mammae); Skullcap (Brain); Vinca major (pancreas). Dosage as Liquid Extract.

Gargle. 5-10 drops Tincture Myrrh in glass of water freely.

Hot compress. St John’s Wort oil to neck or face (Dr A. Vogel).

Poultice to reduce swelling: fresh Mullein leaves.

Vitamins. A. B-complex, C. D. E.

Minerals. Calcium. Iodum. Zinc. Dolomite.

To be treated by or in liaison with a qualified medical practitioner. ... mumps

Bereavement

The emotional reaction following the death of a loved relative or friend. The expression of grief is individual to each person, but there are recognized stages of bereavement, each characterized by a particular attitude. In the first stage, which may last from 3 days to 3 months, there is numbness and an unwillingness to recognize the death. Hallucinations, in which the dead person is seen, are a common experience. Once the numbness wears off, the person may be overwhelmed by feelings of anxiety, anger, and despair that can develop into a depressive illness (see depression).

Insomnia, malaise, agitation, and tearfulness are also common. Gradually, but usually within 2 years, the bereaved person adjusts to the loss.

Family and friends can often provide support. Outside help may be required and may be given by a social worker, health visitor, member of the clergy, or self-help group. For some people, when depression, apathy, and lethargy impede any chance of recovery, specialized counselling or psychotherapy is necessary. (See also stillbirth.)... bereavement

Malaria

A serious disease caused by parasitic protozoa called plasmodia. The infection is spread by the bite of anopheles mosquitoes and is prevalent throughout the tropics. Malaria causes severe fever, and, in some cases, fatal complications affecting the kidneys, liver, brain, and blood.

There are 4 species of plasmodia that cause malaria: PLASMODIUM FALCIPARUM, PLASMODIUM VIVAX, PLASMODIUM OVALE, and PLASMODIUM MALARIAE. When a mosquito carrying any of these species bites a human, the plasmodia enter the bloodstream. They invade the liver and red blood cells, where they multiply. The red cells then rupture, releasing the new parasites. Some of them infect new red cells, and the others develop into forms that can infect more mosquitoes. Falciparum malaria infects more red cells than the other species and therefore causes a more serious infection. Most cases of this form occur in Africa.Symptoms of malaria include fever, shaking, and chills. There may also be severe headache, general malaise, and vomiting. The fever often develops in cycles, occurring every other day (in vivax and ovale infections) or every 3rd day (in malariae infections).

Falciparum malaria can be fatal within days. Infected red cells become sticky and block blood vessels in vital organs. The spleen becomes enlarged and the brain may be affected, leading to coma and convulsions. Destruction of blood cells causes haemolytic anaemia (see anaemia, haemolytic). Kidney failure and jaundice often occur.

A diagnosis is made by examining a blood sample under a microscope to view the parasites. Chloroquine is the usual treatment for species other than falciparum. Falciparum malaria is treated with quinine, mefloquine, or with proguanil and atovaquone. People with vivax or ovale malaria must also take the drug primaquine. In severe cases, blood transfusions may be needed.

Preventive antimalarial drugs should be taken by all visitors to malarial countries. Doctors should be consulted for up-to-date advice on the choice and dosages of drugs to be taken.... malaria

Pelvic Inflammatory Disease

An infection of the internal female reproductive organs. Pelvic inflammatory disease (or ) may not have any obvious cause, but may occur as a result of a sexually transmitted infection, such as gonorrhoea, or after a miscarriage, an abortion, or childbirth. An IUD increases the risk of infection. may cause infertility or increase the risk of ectopic pregnancy.

Common symptoms include abdominal pain and tenderness, fever, and irregular menstrual periods. Pain often occurs after menstruation and may be worse during intercourse. There may also be malaise, vomiting, or backache. A diagnosis is usually made by an internal pelvic examination, examination of swabs to look for infection, and a laparoscopy. Antibiotic drugs and sometimes analgesic drugs are prescribed. An may need to be removed.... pelvic inflammatory disease

Polyarteritis Nodosa

An uncommon disease of medium-sized arteries, also

called periarteritis nodosa. Areas of arterial wall become inflamed, weakened, and liable to aneurysms. The severity of the condition depends on the arteries that are affected and how much they are weakened. The cause seems to be an immune system disturbance, sometimes triggered by exposure to the hepatitis B virus. It is most common in adults and affects men more than women.

Early symptoms of polyarteritis nodosa include fever, aching muscles and joints, general malaise, loss of appetite and weight, and, sometimes, nerve pain. There is also hypertension, skin ulceration, and gangrene. If the coronary arteries are affected, myocardial infarction may occur. Many patients suffer abdominal pain, nausea, vomiting, diarrhoea, and blood in the faeces.

Diagnosis is made by biopsy and angiography. Large doses of corticosteroids, and in some cases immunosuppressants, may allow survival for at least 5 years. Without treatment, few patients survive for this length of time.... polyarteritis nodosa

Reiter’s Syndrome

A condition in which there is a combination of urethritis, reactive arthritis, and conjunctivitis. There may also be uveitis. Reiter’s syndrome is more common in men.

The syndrome is caused by an immune response and usually develops only in people with a genetic predisposition. Most patients have the -B27 tissue type (see histocompatability antigens). The syndrome’s development is induced by infection: usually nongonococcal urethritis, but sometimes bacillary dysentery. Reiter’s syndrome usually starts with a urethral discharge, which is followed by conjunctivitis and then arthritis. The arthritis usually affects 1 or 2 joints (usually the knee and/or ankle) and is often associated with fever and malaise. Attacks can last for several months. Tendons, ligaments, and tissue in the soles of the feet may also become inflamed. Skin rashes are common.

Diagnosis is made from the symptoms.

Analgesic drugs and nonsteroidal antiinflammatory drugs relieve symptoms but may have to be taken for a long period.

Relapses occur in about 1 in 3 cases.... reiter’s syndrome

Toxocariasis

An infestation of humans, usually children, with the larvae of TOXOCARA CANIS: a small, threadlike worm that lives in the intestines of dogs. Children who play with an infested dog or soil contaminated with dog faeces, and who then put their fingers in their mouths, may swallow some of the worm eggs. The eggs hatch in the intestines, and the released larvae migrate to organs such as the liver, lungs, brain, and eyes. Usually, infestation causes mild fever and malaise, which soon clears up; but heavy infestation may lead to pneumonia and seizures. Loss of vision may occur if larvae enter the eye and die there.

A diagnosis is made from sputum analysis, and by a liver biopsy. Severe cases require treatment in hospital with tiabendazole and an anticonvulsant drug.... toxocariasis

Ulcerative Colitis

Chronic inflammation and ulceration of the lining of the colon and rectum, or, especially at the start of the condition, of the rectum alone. The cause of ulcerative colitis is unknown, but the condition is most common in young and middle-aged adults.

The main symptom of ulcerative colitis is bloody diarrhoea; and the faeces may also contain mucus. In severe cases, the diarrhoea and bleeding are extensive, and there may be abdominal pain and tenderness, fever, and general malaise. The incidence of attacks varies considerably. Most commonly, the attacks occur at intervals of a few months. However, in some cases, there may be only a single episode.

Ulcerative colitis may lead to anaemia, caused by blood loss. Other complications include a toxic form of megacolon, which may become life-threatening; rashes; aphthous ulcers; arthritis; conjunctivitis; or uveitis. There is also an increased risk of cancer of the colon developing (see colon, cancer of).

A diagnosis is based on examination of the rectum and lower colon (see sigmoidoscopy) or the entire colon (see colonoscopy), or is made by a barium enema (see barium X-ray examination). During sigmoidoscopy or colonoscopy, a biopsy may be performed. Samples of faeces may be taken for laboratory analysis in order to exclude the possibility of infection by bacteria or parasites. Blood tests may also be needed.

Medical treatments of ulcerative colitis include corticosteroid drugs and sulfasalazine and its derivatives. Colectomy may be required for a severe attack that fails to respond to other treatments, or to avoid colonic cancer in those people who are at high risk.... ulcerative colitis

Urinary Tract Infection

An infection anywhere in the urinary tract. It has differing symptoms, depending on the area affected. Urethritis causes a burning sensation when urine is being passed. Cystitis causes a frequent urge to pass urine, lower abdominal pain, haematuria, and, often, general malaise with a mild fever. Pyelonephritis causes fever and pain in the back under the ribs. Cystitis and pyelonephritis are almost always the result of a bacterial infection. Urethritis is often due to a sexually transmitted infection, such as gonorrhoea, but may have other causes. Urethral infections are more common in men. Infections further up the urinary tract are more common in women. In men, there is often a predisposing factor, such as an enlarged prostate gland (see prostate, enlarged). In women, pregnancy is a risk factor.

In both sexes, causes of urinary tract infections include stones (see calculus, urinary tract), bladder tumours, congenital abnormalities of the urinary tract, or defective bladder emptying as a result of spina bifida or a spinal injury. The risks of developing a urinary tract infection can be reduced by strict personal hygiene, drinking lots of fluids, and regularly emptying the bladder.

Urethritis can lead to the formation of a urethral stricture. Cystitis usually only causes complications if the infection spreads to the kidneys. Pyelonephritis, if it is left untreated, can lead to permanent kidney damage, septicaemia, and septic shock.

The infection is diagnosed by the examination of a urine culture. Further investigations using urography or ultrasound scanning may be necessary. Most infections of the urinary tract are treated with antibiotic drugs.... urinary tract infection

Cfs/me/pvf

a condition, known variously as chronic fatigue syndrome, myalgic encephalomyelitis (or encephalopathy), or postviral fatigue syndrome, characterized by extreme disabling fatigue that has lasted for at least six months, is made worse by physical or mental exertion, does not resolve with bed rest, and cannot be attributed to other disorders. The fatigue is accompanied by at least some of the following: muscle pain or weakness (*fibromyalgia), poor coordination, joint pain, recurrent sore throat, slight fever, painful lymph nodes in the neck and armpits, depression, cognitive impairment (especially an inability to concentrate), and general malaise. The cause is unknown, but in some cases some viral conditions (especially glandular fever) are thought to trigger the disease; however, no viral aetiology has yet been identified. Treatment is restricted to relieving the symptoms and helping sufferers to plan their lives with a minimum of energy expenditure. Graded physiotherapy may be helpful in some cases. Many psychiatrists consider CFS/ME/PVF to be a mood disorder and use behavioural and cognitive techniques as well as antidepressants to treat it.

CGI see Clinical Global Impression.... cfs/me/pvf

Chronic Obstructive Pulmonary Disease

(COPD, chronic obstructive airways disease) a disease of adults, especially those over the age of 45 with a history of smoking or inhalation of airborne pollution, characterized by airflow obstruction that is not fully reversible. The disease has features of *emphysema, chronic *bronchitis, and asthmatic bronchitis. It is now diagnosed, according to the *GOLD guidelines, at different stages:

Stage 0: the presence of risk factors and symptoms (e.g. cough and wheeze) with normal *forced expiratory volume in 1 second (FEV1).

Stage 1: FEV1 is normal, but the ratio of FEV1 to forced *vital capacity (FVC) is less than 70%.

Stage 2: FEV1 is less than 80% but more than 50% of the predicted value for the patient’s age and height.

Stage 3: FEV1 less than 50% but more than 30%.

Stage 4: FEV1 less than 30% or the presence of chronic respiratory failure.

The guidelines for COPD recommend different treatment regimens for different stages. Although the response to inhaled corticosteriods is less for COPD than for asthma, these drugs, especially combined with inhaled long-acting beta agonists (e.g. *salmeterol), can improve quality of life and survival in stages 3 and 4. There is also a decrease in the number of acute exacerbations of COPD (AECOPD): increased sputum volume or purulence and/or breathlessness, with or without symptoms (e.g. cough, wheeze, chest pain, malaise, fever).... chronic obstructive pulmonary disease

Lyme Disease

a disease caused by a spirochaete, Borrelia burgdorferi, and transmitted by certain ticks of the genus Ixodes. Following a 3–32-day incubation period, a slowly extending red rash develops in approximately 75% of cases; intermittent systemic symptoms include fever, malaise, headache and neck stiffness, and muscle and joint pains. Later, 60% of patients suffer intermittent attacks of arthritis, especially of the knees, each attack lasting months and recurring over several years. The spirochaete has been identified in synovium and synovial fluid. Neurological and cardiac involvement occurs in a smaller percentage of cases. Treatment is with doxycycline or a penicillin.... lyme disease

Pneumonia

n. inflammation of the lung caused by bacteria, in which the air sacs (*alveoli) become filled with inflammatory cells and the lung becomes solid (see consolidation). The symptoms include those of any infection (fever, malaise, headaches, etc.), together with cough and chest pain. Pneumonias may be classified in different ways.

(1) According to the X-ray appearance. Lobar pneumonia affects whole lobes and is usually caused by Streptococcus pneumoniae, while lobular pneumonia refers to multiple patchy shadows in a localized or segmental area. When these multiple shadows are widespread, the term bronchopneumonia is used. In bronchopneumonia, the infection starts in a number of small bronchi and spreads in a patchy manner into the alveoli. Interstitial pneumonia is the result of an inflammatory process centred within the alveolar walls rather than the alveolar airspaces. It may be due to a variety of factors, including certain infections, drugs, inhalation of fumes, and exposure to high concentrations of oxygen.

(2) According to the infecting organism. The most common organism is Streptococcus pneumoniae, but Haemophilus influenzae, Staphylococcus aureus, Legionella pneumophila, and Mycoplasma pneumoniae (among others) may all be responsible for the infection. See also atypical pneumonia; viral pneumonia.

(3) According to the clinical and environmental circumstances under which the pneumonia is acquired. These infections are divided into community-acquired pneumonia, hospital-acquired (nosocomial) pneumonia, and pneumonias occurring in immunocompromised subjects (including those with AIDS). The organisms responsible for community-acquired pneumonia are totally different from those in the other groups.

Appropriate antibiotic therapy, based on the clinical situation and on microbiological studies, will result in complete recovery in the majority of patients.... pneumonia

Rabies

(hydrophobia) n. an acute virus disease of the central nervous system that affects all warm-blooded animals and is usually transmitted to humans by a bite from an infected dog. Symptoms appear after an incubation period ranging from 10 days to over a year and include malaise, fever, difficulty in breathing, salivation, periods of intense excitement, hallucinations, and painful muscle spasms of the throat induced by swallowing. In the later stages of the disease the mere sight of water induces convulsions and paralysis; death occurs within 4–5 days. Daily injections of rabies vaccine, together with an injection of rabies antiserum, may prevent the disease from developing in a person bitten by an infected animal. —rabid adj.... rabies

Syphilis

n. a sexually transmitted disease caused by the bacterium Treponema pallidum, resulting in the formation of lesions throughout the body. Bacteria usually enter the body during sexual intercourse, through the mucous membranes of the vagina or urethra, but they may rarely be transmitted through wounds in the skin or scratches. Bacteria may also pass from an infected pregnant woman across the placenta to the developing fetus, resulting in the disease being present at birth (congenital syphilis).

The primary symptom – a hard painless ulcer (*chancre) at the site of infection – forms 2–4 weeks after exposure. Neighbouring lymph nodes enlarge about 2 weeks later. Secondary stage symptoms appear about two months after infection and include fever, malaise, general enlargement of lymph nodes, and a faint red rash on the chest that persists for 1–2 weeks. After months, or even years, the disease enters its tertiary stage with widespread formation of tumour-like masses (*gummas). Tertiary syphilis may cause serious damage to the heart and blood vessels (cardiovascular syphilis) or to the brain and spinal cord (neurosyphilis), resulting in *tabes dorsalis, blindness, and *general paralysis of the insane.

Treatment is with antibiotics, such as penicillin and doxycycline. Syphilis can be diagnosed by several blood tests. Compare bejel. —syphilitic adj.... syphilis




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