An ulcer is a sore that develops on the skin or a mucous membrane
(such as inside the mouth, stomach, or intestines). Ulcers can be shallow or
deep and can destroy the skin or the membrane where they develop.
Ulcers can be caused by some types of infection, injury, or
cancer.
Last Updated:
July 8, 2009
Author:
Jan Nissl, RN, BS
Medical Review:
Kathleen Romito, MD - Family Medicine & William M. Green, MD - Emergency Medicine & Alexander H. Murray, MD, FRCPC - Dermatology & H. Michael O'Connor, MD - Emergency Medicine