Noise-induced hearing loss Health Dictionary

Noise-induced Hearing Loss: From 1 Different Sources


Hearing loss caused by prolonged exposure to excessive noise or by brief exposure to intensely loud noise.

Exposure to a sudden, very loud noise, usually above 130 decibels, can cause immediate and permanent damage to hearing. Normally, muscles in the middle ear respond to loud noise by altering the position of the ossicles (the chain of bones that pass vibrations to the inner ear), thus damping down the intensity of the noise. If these protective reflexes have no time to respond, the full force of the vibrations is carried to the inner ear, severely damaging the delicate hair cells in the cochlea. Occasionally, loud noises can rupture the eardrum.

More commonly, noise damage occurs over a period of time by prolonged exposure to lower levels of noise. Any noise above 85–90 decibels may cause damage, with gradual destruction of the hair cells of the cochlea, leading to permanent hearing loss. Prolonged exposure to loud noise leads initially to a loss of the ability to hear certain high tones. Later, deafness extends to all high frequencies, and the perception of speech is impaired. Eventually, lower tones are also affected.

Sounds at 85–90 decibels or above may cause pain and temporary deafness. Prolonged tinnitus (ringing or buzzing in

the ears) occurring after a noise has ceased is an indication that some damage has probably occurred.

Health Source: BMA Medical Dictionary
Author: The British Medical Association

Hearing Loss

Otosclerosis: a common cause of deafness in healthy adults. Gradual progressive hearing loss with troublesome tinnitus. The stapes may be fixed and the cochlea damaged. Bones may become spongy and demineralised. While deafness is a matter for the professional specialist, herbal treatment may prove useful. Examine ear for wax.

Internal. Elderflower and Peppermint tea (catarrhal). Ginkgo tea.

Tablets/capsules. Ginkgo. Improvement reported in moderate loss.

Topical. Garlic oil. Injection of 3-4 drops at night.

Wax in the ear. Mixture: 30 drops oil Eucalyptus, 1 drop Tincture Capsicum (or 3 of Ginger), 1oz (30ml) Olive oil. Inject 4-5 drops, warm.

Black Cohosh Drops. It is claimed that John Christopher (USA) improved many cases of moderate hearing loss with topical use of 5-10 drops Liquid Extract in 1oz oil of Mullein (or Olive oil).

Pulsatilla Drops. Tincture Pulsatilla and glycerol 50/50. 2-3 drops injected at bedtime. Assists auditory nerve function. (Arthur Hyde)

Nerve deafness due to fibroma of the 8th cranial nerve, or after surgery – oral: Mistletoe tea for temporary relief. ... hearing loss

Hearing

See DEAFNESS; EAR.... hearing

Hearing Aids

Nearly two-thirds of people aged over 70 have some degree of hearing impairment (see DEAFNESS). Hearing aids are no substitute for de?nitive treatment of the underlying cause of poor hearing, so examination by an ear, nose and throat surgeon and an audiologist is sensible before a hearing aid is issued (and is essential before one can be given through the NHS). The choice of aid depends on the age, manipulative skills, and degree of hearing impairment of the patient and the underlying cause of the deafness. The choice of hearing aid for a deaf child is particularly important, as impaired hearing can hinder speech development.

Electronic aids consist, essentially, of a microphone, an ampli?er, and an earphone. In postaural aids the microphone and ampli?er are contained in a small box worn behind the ear or attached to spectacles. The earphone is on a specially moulded earpiece. Some patients ?nd it di?cult to manipulate the controls of an aid worn behind the ear, and they may be better o? with a device worn on the body. Some hearing aids are worn entirely within the ear and are very discreet. They are particularly useful for people who have to wear protective headgear such as helmets.

The most sophisticated aids sit entirely within the ear canal so are virtually invisible. They may be tuned so that only the frequencies the wearer cannot hear are ampli?ed.

Many have a volume control and a special setting for use with telephone and in rooms ?tted with an inductive coupler that screens out background noise.

In making a choice therefore from the large range of e?ective hearing aids now available, the expert advice of an ear specialist must be obtained. The RNID (Royal National Institute for Deaf People) provides a list of clinics where such a specialist can be consulted. It also gives reliable advice concerning the purchase and use of hearing aids – a worthwhile function, as some aids are very expensive.... hearing aids

Noise

See DEAFNESS; OCCUPATIONAL DISEASES.... noise

Drink Tea For Weight Loss

If you’ve decided to go on a diet in order to lose weight, you have to be careful with what you drink and eat. Sodas and some juices are a definite no, and while you can drink water all the time, it might get a bit dull. If you want to try something different, and especially pleasant to the taste, tea’s the best choice. Find out more about the perfect teas for weight loss. Benefits of tea for weight loss If you drink your tea simple, without sugar, then you’ll enjoy a hot beverage with 0 calories. This at least prevents you from gaining weight. However, based on the effect one type of tea may have on the digestive system, drinking tea can even help you lose weight. From green tea to oolong tea, each has its own health benefits which help you when you’re on a diet. Types of tea for weight loss First of all, green tea is perfect when you’re on a diet. Among its active constituents, green tea has catechin polyphenols, which is quite useful when you want to lose weight. Thanks to this, drinking green tea will increase thermogenesis (the amount of calories which are burned) and fat oxidation. You can drink 4-5 cups of tea a day. Oolong tea is also helpful if you’re on a diet. It even has a stronger effect than green tea, by speeding up the body’s metabolism and promoting fat burning. If you include it in your diet, don’t drink more than two cups a day. Peppermint tea is included on the list of teas you can drink while on a diet. Besides the fact that it promotes a good digestion, it helps you burn calories as it speeds up the digestive process. Other teas that help you lose weight include star anise tea, rose petal tea, as well as various types of herbal teas. Tea Steeping Time Steeping time varies from one type of tea to another. If you use teabags, follow the instructions written on the box. If you use dried leaves to make your tea for weight loss, then here are a few steeping instructions. If you’re drinking green tea, it’s best that you let it steep for about 3 minutes. Steeping time for oolong tea can vary from one minute to 5, based on how strong you want the tea’s flavor to be. And as for peppermint tea, you should let it steep for about 4-5 minutes. Tips to sweeten your diet tea If you want to sweeten your tea even when on a diet, you mustn’t use sugar or milk, even if you like those the best. While they won’t add weight, they also won’t help you lose it. The best solution, in this case, is for you to use honey. Other things you can use to sweeten it are fruit juices (especially lemon juice) and stevia leaves. Based on your preferences and the taste of the tea you choose, you can even combine them. Caffeine in tea and weight loss The caffeine found in various types of tea also helps you lose weight. Caffeine acts as a stimulant; therefore it gives you more energy. The more energetic you feel, the more you’re bound to exercise in order to burn more fats. Also, as it acts as a stimulant, it can help reduce your appetite. Caffeine might not be the only stimulant you’ll find in teas. Other stimulants include ginseng, taurine, and guarnine. Side effects related to weight loss tea People who know coffee doesn’t do them good should be careful with teas that contain caffeine. It can cause unpleasant side effects, such as insomnia, anxiety, headache, dizziness, irritability, blurred vision and skin rashes. When you combine your diet tea with a different alimentation and exercising, the side effects might become more unpleasant. Also, make sure you check the amount of tea that’s recommended for drinking. You can have 4-5 cups of green tea per day, while in the case of oolong tea, it is advised that you drink two cups. The amount varies from one tea to another. Now, drinking tea for weight loss sounds like a tempting idea. Considering how helpful tea can be when you’re trying to lose weight, make sure you pick one when you go on a diet.... drink tea for weight loss

Fabricated And Induced Illness

See MUNCHAUSEN’S SYNDROME.... fabricated and induced illness

Abortion, Induced

Medically induced termination of pregnancy. Abortion may be performed if continuation of the pregnancy would risk the woman’s life, if the mental or physical health of the woman or her existing children is at risk, or if there is a substantial risk of handicap to the baby.

Depending on the stage of pregnancy, termination may be induced by using drugs or by the surgical technique of vacuum suction curettage, under either a general or local anaesthetic, during which the fetal and placental tissues are removed.

Complications are rare.... abortion, induced

Loss Of Blood

As a result of trauma. This is perhaps the simplest example of all, when, as a result of an accident involving a large artery, there is severe haemorrhage.

Menstruation. The regular monthly loss of blood which women sustain as a result of menstruation always puts a strain on the blood-forming organs. If this loss is excessive, then over a period of time it may lead to quite severe anaemia.

Childbirth. A considerable amount of blood is always lost at childbirth; if this is severe, or if the woman was anaemic during pregnancy, a severe degree of anaemia may develop.

Bleeding from the gastrointestinal tract. The best example here is anaemia due to ‘bleeding piles’ (see HAEMORRHOIDS). Such bleeding, even though slight, is a common cause of anaemia in both men and women if maintained over a long period of time. The haemorrhage may be more acute and occur from a DUODENAL ULCER or gastric ulcer (see STOMACH, DISEASES OF), when it is known as haematemesis.

Certain blood diseases, such as PURPURA and HAEMOPHILIA, which are characterised by bleeding.... loss of blood

Hair Loss

Alopecia. Baldness. Shedding of the hair in patches leaving glossy bald areas. It is normal to lose about one hundred hairs a day, but severe stress such as unemployment, divorce or death in a family may considerably increase hair loss. Losses of long-standing are seldom recovered.

Causes: hormone deficiency (Agnus Castus) in females, where it may be associated with failing thyroid or ovarian function. In such cases, other agents include: Helonias, Motherwort, Black Haw bark. Other causes may be pregnancy, the menopause, or simply discontinuing The Pill. Certain skin diseases predispose: ringworm (Thuja), eczema (Yellow Dock), from thyroid disorder (Kelp, Blue Flag root).

Exposure to some cosmetics, excessive sunlight, strong chemicals and treatment of cancer with cytotoxic drugs may interfere with nutrition of the hair follicles. To ensure a healthy scalp a correct mineral balance is essential calling for supplementation of the diet with vitamins, selenium, zinc and silica. Yellow Dock is believed to counter toxicity of chemicals; Pleurisy root opens the pores to promote sweat and action of surface capillaries.

Baldness sometimes happens suddenly; eye-lashes or beard may be affected. Though emotional stress and a run-down condition is a frequent cause, most cases are not permanent, returning to normal with adequate treatment.

Baldness of the eyebrows alerts us to a lowered function of the thyroid gland, being an early outward sign of myxoedema. A pony-tail hair style or the wearing of a crash helmet may cause what is known as traction alopecia. Heavy coffee drinkers invariably lose hair lustre.

Soviet Research favours silica-rich plants internally and as a lotion: Horsetail, Burdock, Nettles, Bamboo gum.

Growth of hair is assisted by improving surface circulation of the scalp which is beneficial for conveying nutrients to the hair roots and facilitating drainage. Herbal vasodilators stimulate hair follicle nutrition and encourage growth: Cayenne, Pleurisy root, Black Cohosh and Prickly Ash, taken internally. A convenient way of taking Cayenne is the use of a pepper-shaker at table.

Topical. Hair rinse. 2-3 times weekly. Infusion: equal parts Yarrow, Sage and Rosemary. 1oz (30g) to 1 pint (500ml) water. Simmer gently five minutes. Allow to cool. Strain before use.

Cider vinegar – minimal success reported.

Day lotion. Liquid Extract Jaborandi half an ounce; Tincture Cantharides half an ounce; Oil Jojoba to 4oz. Shake well before use.

Oily lotion. Equal parts Olive and Eucalyptus oils.

Bay Rhum Lotion. Oil of Bay 50 drops; Olive oil half an ounce; Rum (Jamaica or other) to 4oz. Shake well before use.

Oil Rosemary: rub into hair roots.

Russian Traditional. Castor oil half an ounce; Almond oil 1oz; Oil Geranium 15 drops; Vodka to 6oz. Rub into hair roots.

Aromatherapy. To 1oz Castor oil and 1oz Olive oil add, 10 drops each – Oils Neroli, Lavender and Rosemary.

Gentian plant extract. Japanese scalp massage with extract from roots to thicken thinning hair. Some success reported.

Supplements. B-vitamins, Kelp, Silicea Biochemic salt. Zinc. Low levels of iron and zinc can cause the condition.

Note: Studies show that male occipital baldness confers a risk of heart disease, being associated with a higher total cholesterol and diastolic blood pressure than men with a full head of hair. Frontal baldness has not been found to be associated with increased risk of coronary heart disease and myocardial infarct. “It seems prudent for bald men to be specially vigorous in controlling risk factors for such conditions.” (S.M. Lesko, Journal of the American Medical Association, Feb 24, 1993, 269: 998-1003) ... hair loss

Appetite, Loss Of

Loss of appetite is usually temporary and due to an emotional upset or minor illness. Persistent loss of appetite may have a more serious underlying cause, such as chronic infection or cancer.... appetite, loss of

Memory, Loss Of

See amnesia.... memory, loss of

Taste, Loss Of

Loss of the sense of taste, usually as a result of the loss of the sense of smell.

The most common cause is inflammation of the nasal passages.

Other causes of loss of taste include any condition that causes a dry mouth (see mouth, dry); natural degeneration of the taste buds; damage to the taste eign particles.

Tear production increases in response to eye irritation and emotion.... taste, loss of

Voice, Loss Of

Inability to speak normally. Temporary partial loss of voice commonly results from straining of the muscles of the larynx through overuse of the voice or from inflammation of the vocal cords in laryngitis. Persistent or recurrent voice loss may be due to polyps on the vocal cords, thickening of the cords in hypothyroidism, or interference with the nerve supply to the larynx muscles due to cancer of the larynx, thyroid gland, or oesophagus. Total loss of voice is rare and is usually of psychological origin. (See also hoarseness; larynx, disorders of.)... voice, loss of

Bicros Hearing Aid

see contralateral-routing-of-signal hearing aid.... bicros hearing aid

Bone-anchored Hearing Aid

(BAHA) a specialized form of *hearing aid for patients with certain forms of conductive *deafness. A small titanium screw is surgically fixed into the bone of the skull behind the external ear using a process called *osseointegration. Sound energy is passed from a miniature microphone and amplifier to the screw, through the bone, to the *cochlea.... bone-anchored hearing aid

Hearing Tests

Tests carried out to assess hearing. Hearing tests are performed as part of a routine assessment of child development and when hearing impairment is suspected. The tests are sometimes included in a general medical examination. Hearing tests may also be used to identify the cause of tinnitus or dizziness.

An audiometer (an electrical instrument) is used to test an individual’s ability to hear sounds at different frequencies and volumes. The lowest level at which a person can hear and repeat words (the speech reception threshold) is tested, as is the ability to hear words clearly (speech discrimination). The type of hearing loss (see deafness) is determined by holding a tuning fork to different parts of the ear.... hearing tests

Vision, Loss Of

Inability to see. This may develop slowly or suddenly and may be temporary or permanent, depending on the cause. Vision loss may affect 1 or both eyes. It can cause complete blindness or may affect only peripheral, or only central, vision.

Progressive loss of visual clarity is common with advancing age and may be due to a number of disorders (see vision, disorders of).

Sudden loss of vision may be caused by disorders such as hyphaema, severe uveitis, vitreous haemorrhage, or retinal haemorrhage.

Optic neuritis can reduce vision in 1 eye.

Damage to the nerve connections between the eyes and brain, or to the visual area of the brain, can cause loss of peripheral vision and may be a result of embolism, ischaemia, tumour, inflammation, or injury.... vision, loss of

Contralateral-routing-of-signal Hearing Aid

(CROS hearing aid) a form of hearing aid used to help people with severe or profound unilateral hearing loss. Sound information is collected by a microphone worn on the affected side and then transmitted by a thin wire or Bluetooth wireless technology to a device worn on the opposite side. If the hearing in the better ear is normal, no amplification is applied to the signal. If the better ear has a hearing loss the device also acts as a conventional hearing aid and amplifies the signal from both sides: this is known as a BICROS hearing aid.... contralateral-routing-of-signal hearing aid

Cros Hearing Aid

see contralateral-routing-of-signal hearing aid.... cros hearing aid

Digital Hearing Aid

see hearing aid.... digital hearing aid

Environmental Hearing Aid

any of various devices for helping people with hearing difficulties. Environmental aids include *assistive listening devices and alerting devices, such as door bells with visible as well as audible alarms, infrared links to televisions, and vibrating alarm clocks.... environmental hearing aid

Hearing Aid

a device to improve the hearing. Simple passive devices, such as ear trumpets, are now rarely used. An analogue hearing aid consists of a miniature microphone, an amplifier, and a tiny loudspeaker. The aid is powered by a battery and the whole unit is small enough to fit behind or within the ear inconspicuously. If necessary, aids can be built into the frames of spectacles. In a few cases of conductive hearing loss the loudspeaker is replaced by a vibrator that presses on the bone behind the ear and transmits the sound energy through the bones of the skull to the inner ear. Digital hearing aids are in some respects similar to analogue aids but in addition to the microphone, amplifier, and loudspeaker, they have digital-to-analogue converters and a tiny computer built into the casing of the aid. This enables the aid to be programmed to the patient’s particular requirements and generally offers improved sound quality. See also bone-anchored hearing aid; cochlear implant; environmental hearing aid; implantable hearing aid.... hearing aid

Hearing Therapy

the support and rehabilitation of people with hearing difficulties, tinnitus, or vertigo. It includes supplying help with acclimatizing to *hearing aids, teaching lip-reading, advising on *environmental hearing aids, and offering general information and advice regarding the auditory system. Other functions are to explain such conditions as *Ménière’s disease and *otosclerosis and to provide *tinnitus retraining therapy (TRT) and other forms of tinnitus management.... hearing therapy

Implantable Hearing Aid

a form of hearing aid in which a small electrical vibrator is surgically attached to the auditory *ossicles. An external device with a microphone and an electronic processing unit passes information to the implanted device using radio-frequency waves. The external part is located behind the pinna and is powered by batteries.... implantable hearing aid

Induced Abortion

see abortion.... induced abortion

Loss

n. no longer having some valued aspect of one’s life, such as a relationship, a job, or a home, that one has previously enjoyed. This may have health consequences: shock, disbelief, and emotional numbness may be followed by anger, guilt, anxiety, or profound sadness. Such emotions may lead to behavioural changes or symptoms that bring people to health care. Encouraging the patient to talk about the loss will require *empathy, sensitivity, and *judgment from the professional, both to obtain the history of the events and to provide helpful advice and direction to assist in adjustment. See also bereavement.... loss

Pregnancy-induced Hypertension

(PIH) raised blood pressure (>140/90 mmHg) developing in a woman during the second half of pregnancy. It usually resolves within six weeks of delivery and is associated with a better prognosis than *pre-eclampsia.... pregnancy-induced hypertension

White Noise Instrument

a device, resembling a small hearing aid, that produces sounds of many frequencies at equal intensities and is used in the treatment of tinnitus. Also known as a broad-band sound generator, ear-level sound generator, noiser, or wide-band sound generator, it was formerly known as a tinnitus masker.... white noise instrument



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