An ulcer is a crater-like lesion on the skin or mucous membrane.
Causes
Ulcers can be caused by an inflammatory, infectious, or cancerous condition.
Review Date:
10/28/2008
Reviewed By:
Michael Lehrer, M.D., Department of Dermatology, University of Pennsylvania Medical Center, Philadelphia, PA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.