Definition: A focal loss of the top 2 layers of skin, the dermis and epidermis. Ulcers heal with scarring.
Also Known As: aphthous ulcers, chancroid, decubitus ulcers, pyoderma gangrenosum, syphillis, chancre, stasis ulcers.
From Heather Brannon, MD, former About.com Guide
Updated January 04, 2004
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