Cholinergic urticaria. Close-up of urticaria on the body of a 33-year-old male patient. Urticaria, or hives, is a skin condition in which a rash of it
Cholinergic urticaria. Close-up of urticaria on the body of a 33-year-old male patient. Urticaria, or hives, is a skin condition in which a rash of itchy wheals or lumps develops on the skin, usually on the trunk or limbs. The wheals appear in a matter of minutes and usually fade after a few hours. Urticaria most often occurs as an acute allergic response, triggered, for instance, by particular foods or drugs. It can also result from heat, cold, sunlight or, less frequently, other medical conditions like cancer. Cholinergic urticaria is provoked by sweating.
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Photo credit: © DR P. MARAZZI/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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