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Skin layers
Skin layers

Patches

A patch is a flat area of color change in the skin that measure 1 centimeter or more in diameter.

Updated: 11/4/2012

David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, David R. Eltz, Stephanie Slon, and Nissi Wang.


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