A member asked:

Most people who experience chronic cholinergic urticaria experienced a stressful event one year before their first outbreak". immunology explanation?

A doctor has provided 1 answer
Dr. John Chiu answered

Not unnessarily: Cholinergic urticaria happens in some people after the core body temperature rises then cools down. It may happen with stress, exercise, or even after having taken a hot shower. The cause is unknown but it is speculated that this group of people have an overactive cholinergic system.

Answered 11/7/2013

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