Allergies [30] Allergy is a disorder of the immune system often also referred to as atopy.
Antidepressants [27] An antidepressant is a psychiatric medication used to alleviate mood disorders, such as major depression and dysthymia.
Arthritis [11] Arthritis is a group of conditions involving damage to the joints of the body.
Cancer [16] Cancer is a class of diseases in which a group of cells display uncontrolled growth
Cardio & Blood [1] Risk factors for heart disease: infections
Cholesterol [2] A fat-like substance called a lipid. It is used to build cell membranes, hormones and bile acids
Diabetes [21] The inability of the body to produce, or the inability to metabolize, the human hormone insulin; Diabetes insipidus, usually a disorder of the ...
Epilepsy [4] Epilepsy is a common chronic neurological disorder characterized by recurrent unprovoked seizures
Gastrointestinal [1] The digestive tract is the system of organs within multicellular animals that takes in food...
General Health [180] The infant, child or young person?s current health condition
Herbal [15] Herbal tea, herbal medicine
Hormonal [18] Hormones - Proteins produced by organs of the body that trigger activity in other locations.
Men's Health [1] For men on fitness, health, sex, caree
Pain relief [17] Pain management is the medical discipline concerned with the relief of pain.
Skin care [24] The skin is the outer covering of the body
Weight Loss [23] Loss of body weight by dieting or due to various easting disorders or medical conditions.
Women's Health [35] Find information on women's health issues, and lifestyle at the Women's Health
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Classical allergic diseases/nettle-rash and oedema: two forms of urticaria CLASSICAL ALLERGIC DISEASES/NETTLE-RASH AND OEDEMA: TWO FORMS OF URTICARIA
There are two forms of urticaria which differ mainly in their timing. The type which troubled Kustner (see p22) is acute urticaria, which comes on very rapidly and usually clears within 24 hours. It is usually accompanied by other symptoms, such as feverishness, faintness or nausea. Chronic urticaria, the other form, is a persistent rash, or one which comes and goes over a much longer period of time.
The blame for acute urticaria can usually be pinned on a food that was eaten just before the attack began, although there are other causes of acute urticaria, including insect stings, drugs (notably penicillin), and, more rarely, something that was applied to the skin. Whatever the cause, the reaction is usually so prompt and unequivocal that the patient easily makes the correct diagnosis.
With chronic urticaria, things are not so simple. Only about 20 or 30 per cent of people with this distressing problem are likely to discover the underlying cause. Two-thirds of those afflicted do not have high IgE levels, nor any other allergic illness, and it is not at all certain what causes their symptoms. However, those that can identify the source of their problem very often find that there are several triggers, including food or food additives. Whether they are acting as allergens, or have a drug-like effect, is an open question.
The subject of urticaria will come up again in Chapter Five, because even when the rash is truly allergic it can be caused in more than one way.
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Allergies
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