An ulcer is a discontinuity or break in a bodily membrane that impedes normal function of the affected organ. According to Robbins's pathology, "ulcer is the breach of the continuity of skin, epithelium or mucous membrane caused by sloughing out of inflamed necrotic tissue."[citation needed] Common forms of ulcers recognized in medicine include:[citation needed]

Gastric Ulcer.png
Gastric ulcer


  1. ^ "Definition & Facts for Peptic Ulcers (Stomach Ulcers) | NIDDK". National Institute of Diabetes and Digestive and Kidney Diseases. Retrieved 14 July 2022.

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