Patches Health Article

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Skin layers

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A patch is a flat area of color change in the skin that is greater than 10 millimeters wide.

Reviewer Info: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.; ADAM Health Illustrated Encyclopedia, 10/28/2008

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