Article: Hives

Hives

Definition

Hives are an allergic skin reaction causing localized redness, swelling, and itching .

Description

Hives are a reaction of the body's immune system that causes areas of the skin to swell, itch, and become reddened. (The affected areas are called wheals.) When the reaction is limited to small areas of the skin, it is called urticaria. Involvement of larger areas, such as whole sections of a limb, is called angioedema.

Causes & symptoms

Causes

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