HIVES: an allergic disorder marked by raised edematous patches of skin or mucous membrane and usually by intense itching and caused by contact with a specific precipitating factor (as a food, drug, or inhalant) either externally or internally -- also called urticaria.HIVES: an allergic disorder marked by raised edematous patches of skin or mucous membrane and usually by intense itching and caused by contact with a specific precipitating factor (as a food, drug, or inhalant) either externally or internally -- also called urticaria.
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