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A member asked:
When i itch my skin on my arms it goes red and swells up what could be causing this?
A doctor has provided 1 answer
Urticaria : This phenomenon is known as dermatographic urticaria or dermatographism. The pressure basically causes histamine release tracing the path of your pressure allergically with a vascular response in the epidermis. Very common. Just let it resolve.
Answered 9/5/2016
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