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Varicose veins are twisted, enlarged veins that can occur anywhere a vein is close to skin, but occur most often in the legs. Faulty valves in veins and weakened and stretched vein walls cause varicose veins to develop.
Last Revised: February 1, 2012
Author: Healthwise Staff
Medical Review: E. Gregory Thompson, MD - Internal Medicine & David A. Szalay, MD - Vascular Surgery
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