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
February 25, 2013
E. Gregory Thompson, MD - Internal Medicine & Rohit K Katial, MD - Allergy and Immunology
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