Nocturnal emission Health Dictionary

Nocturnal Emission: From 1 Different Sources


Ejaculation that occurs during sleep, commonly called a ‘wet dream’. Nocturnal emission is normal in male adolescents.
Health Source: BMA Medical Dictionary
Author: The British Medical Association

Emission

A discharge. The term is commonly used to describe the orgasmic ?ow of SEMEN from the erect PENIS that occurs during sleep. Described as a nocturnal emission or, colloquially, as a ‘wet dream’, it is a common event in late PUBERTY.... emission

Positron Emission Tomography

See

PET scanning.... positron emission tomography

Nocturnal Enuresis

The involuntary passing of URINE during sleep. It is a condition predominantly of childhood, and usually genetically determined. Sometimes, however, it is a symptom of anxiety in a child, especially if there has been over-rigorous attempts at toilet-training or hostile or unloving behaviour by a parent. It can also be provoked by apparently unimportant changes in a child’s life – for example, moving house. In a small minority of cases it is due to some organic cause such as infection of the genitourinary tract.

The age at which a child achieves full control of bladder function varies considerably. Such control is sometimes achieved in the second year, but much more commonly not until 2–3 years old. Some children do not normally achieve such control until the fourth, or even ?fth, year, so that paediatricians are reluctant to make this diagnosis before a child is aged six.

The approach consists essentially of reassurance and ?rm but kindly and understanding training. In most cases the use of a ‘star chart’ and a buzzer alarm which wakens the child should he or she start passing urine is helpful. Where there are relationship or social problems, these need to be considered in treating the child. The few who have urinary infection or irritable bladders may respond to drug tretament.

Those who do not respond may be helped by DDAVP, an analogue of a pituitary hormone, which reduces the amount of urine produced overnight. It is licensed for use for three months at a time. Some children prefer to reserve it for occasions such as sleeping away from home. The antidepressant imipramine can help some children but has to be used cautiously because of side-effects.

For help, contact www.eric.org.uk... nocturnal enuresis

Positron-emission Tomography (pet)

See PET SCANNING.... positron-emission tomography (pet)

Otoacoustic Emission

An echo emitted by the inner ear in response to sound.

The emission is produced only by a normally functioning ear and is recorded in a test to detect impaired hearing.... otoacoustic emission

Otoacoustic Emissions

(OAE, Kemp echoes) tiny sounds that emerge from the inner ear either spontaneously (spontaneous otoacoustic emissions, SOAE) or shortly after the ear is exposed to an external sound (evoked otoacoustic emissions, EOAE). An objective test of hearing has been developed using otoacoustic emissions. The test equipment creates a small sound and then detects any response from the ear. This can be done using a click stimulus (transient otoacoustic emissions, TOAE) or two separate tones (distortion product otoacoustic emissions, DPOAE). A normal response suggests that the ear is functioning and that hearing is satisfactory. All newborn children in the UK are now screened using this technique.... otoacoustic emissions

Paroxysmal Nocturnal Haemoglobinuria

(PNH) a type of acquired haemolytic *anaemia that results from an abnormality of the red blood cell membrane. It is due to a defect in the formation of glycosylphosphatidylinositol (GPI), whose role is to anchor proteins to the lipid framework of the membrane. This leads to increased *complement-mediated destruction of red blood cells, which results in the release of haemoglobin in the circulation and then in the urine, giving the latter a reddish colour. Some patients may develop blood clots.... paroxysmal nocturnal haemoglobinuria

Single Photon Emission Computed Tomography

see SPECT scanning.... single photon emission computed tomography



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