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A member asked:
Sometimes i itch so badly and when i scratch, the places swell as if i've been beaten. what causes this and what should i do?
A doctor has provided 1 answer
Dermatographism: You are describing a condition called dermatographism. When you scratch you are causing mast cells in your skin to release histamine the itch and swelling chemical in your body and it is creating hives / urticaria.
Answered 4/18/2013
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