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Patients & Consumers Online Tools Find an Allergist / Immunologist Pollen Counts Diseases 101 Drug Guide Featured Resources » AAAAI Tips Brochures Topic of the Month Information Request Form Donate Now Constituencies » Patients & Consumers Contact Search by Condition (A-Z) Request a Speaker Smoke Free Homes Referral Guidelines Breakthroughs in Bioscience Other Resources En Español Just for Kids Seniors		Allergic Conditions: Urticaria Urticaria, also knows as hives, are raised, red itchy bumps of varying sizes in the shallow layers of the skin. They are caused by a chemical in the body called histamine which is released from certain cells. Hives are a particularly vexing problem—the intensity of the itch can completely disrupt normal activities. Resources about hives: Allergic Skin Conditions Tip Brochure  The Allergy Report – Urticaria  Please visit an allergist for more information on allergic disease and your individual medical condition. If you need to locate an allergist in your area, visit the Academy’s online Physician Referral Directory. <back>
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