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2020 Apr 03
J Eur Acad Dermatol Venereol
Cholinergic urticaria (CholU) was described first by Duke in 1924. CholU is a skin disorder characterized by highly pruritic wheals, 1-2 mm in size, with surrounding erythema. CholU is a chronic inducible urticaria, and usually appears after sweating, which can be induced by hot baths, physical exercise, and/or emotional stress.