Pure Cold-Induced Cholinergic Urticaria in a Pediatric Patient.

Cold urticaria and cholinergic urticaria are two distinct entities. The presentation of exclusive cold-induced cholinergic urticaria is very rare. The patient described herein had experienced urticaria in the exclusive setting of exercising in a cold environment. Urticarial testing including laboratory and in-office testing was all negative. The patient has prevented urticaria symptoms with oral antihistamine therapy. Pure cold-induced cholinergic urticaria is rarely described in literature. This form of urticaria has yet to be described in a pediatric patient.