Hives are raised, often itchy, red welts on the surface of the skin. They are usually an allergic reaction to food or medicine.
Urticaria
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...
Read moreApproximately 20 percent of the U.S. population gets hives, also called urticaria, at least one time in their life. Hives are red, swollen... Read more »
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Source: Harvard Decision Guide
What Is It? Hives, also called urticaria, are circumscribed swellings on the skin that often are itchy. Often they are pink or red, but they don't... Read more »
Source: ADAM Encyclopedia
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Source: HealthCentral Encyclopedia
For most people, the bite or sting of a bee, wasp, ant, mosquito, or other insect causes minor irritation. For people allergic to insect bites or... Read more »
Source: ADAM Encyclopedia
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