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    Hives
    Picture of an allergic skin reaction to food.

    Hives (urticaria) are an allergic reaction of the skin that appears as raised, red, itchy bumps of different shapes and sizes. Patches of hives may combine to form raised, reddened skin over large areas of the body. Hives are often minor, but they can also be the first sign of a life-threatening allergic reaction (anaphylaxis) that requires emergency care.

    ByHealthwise Staff
    Primary Medical Reviewer E. Gregory Thompson, MD - Internal Medicine
    Specialist Medical Reviewer Rohit K Katial, MD - Allergy and Immunology

    Current as ofFebruary 20, 2015

    Current as of: February 20, 2015

    Author: Healthwise Staff

    Medical Review: E. Gregory Thompson, MD - Internal Medicine & Rohit K Katial, MD - Allergy and Immunology

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