Dermatographism - close-up
From DrKoop's partner site on cholesterol, CholesterolNetwork.com
Dermatographism is a condition where lightly scratching the skin raises wheals or welts. Histamine is released, which causes the small blood vessels (capillaries) to dilate, producing redness and localized swelling.
Review Date: 04/27/2006 ![]() advertisement
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