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What Internal Diseases Cause Hives?
Hives are raised, often itchy, red welts on the surface of the skin. They are usually an allergic reaction to food or medicine.
Alternative Names
Urticaria
Causes, incidence, and risk factors
When you have an allergic reaction to a substance, your body releases histamine and other chemicals into your bloodstream. This causes itching, swelling, and other symptoms. Hives are a common reaction, especially in people with other allergies such as hay fever.
When swelling or welts occur around...
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From Our Sources
Hives
Source: ADAM Encyclopedia
UrticariaPreventionAvoid exposure to substances that give you allergic reactions. Don't wear tight-fitting clothing and avoid hot baths or showers... Read more »
Hives
Source: ADAM Encyclopedia
UrticariaSymptomsItchingSwelling of the surface of the skin into red- or skin-colored welts (called wheals) with clearly defined edgesThe hives may... Read more »
Hives
Source: ADAM Encyclopedia
UrticariaTreatmentTreatment may not be needed if the hives are mild. They may disappear on their own. To reduce itching and swelling:Avoid hot baths... Read more »
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