Dermatographism on the arm
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 at the site, causing the small blood vessels (capillaries) to dilate, producing redness and localized swelling.
Review Date: 04/27/2006 ![]() advertisement
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