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cholinergic urticaria

   Also found in: Wikipedia 0.01 sec.
cholinergic urticaria
n.
A form of nonallergic or physical urticaria initiated by heat or by excitement, consisting of pruritic areas surrounded by bright red macules. Also called heat urticaria.
cholinergic urticaria
Etymology: Gk, chole + ergon, to work; L, urtica, nettle
an abnormal and usually temporary vascular reaction of the skin, often associated with sweating, in susceptible individuals subjected to stress, strong exertion, or hot weather. The condition is characterized by small, pale, itchy papules surrounded by reddish areas. It is caused by the action of acetylcholine on mast cells. Compare urticaria.


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