A member asked:

Sometimes in mornings i go out for a walk, i get these hives/ rashes on my hands and thigh. not sure what's going on?

6 doctors weighed in across 2 answers
Dr. John Chiu answered

Cold or hot: Can you correlate the hives with exposure to cold or warm weather? Either condition can cause hives in some people. Try taking an antihistamine 1-2 hrs prior and see if this helps.

Answered 11/28/2017

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Dr. Kristin Sokol answered

Specializes in Allergy and Immunology

Urticaria: Probably cholinergic urticaria, small hives brought on by hot weather, sweating, exercise and stress. Treat with oral antihistamine if bothersome. If not responding to antihistamines or you start having other symptoms, see allergist to determine need for further evaluation and treatment.

Answered 9/30/2019

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