an open sore on an external or internal surface of the body, caused by a break in the skin or mucous membrane that fails to heal

A medical condition where the stomach lining is damaged by stomach acid, causing symptoms such as upper abdominal pain, nausea, and vomiting

A type of peptic ulcer occurring in the duodenum, often caused by excessive stomach acid or emotional stress and resulting in upper abdominal pain; commonly occurs within three centimeters of the pylorus.

a localized injury to the skin and underlying tissue caused by prolonged pressure, also known as a bedsore or decubitus ulcer

A medical condition where stomach acid damages the lining of the digestive tract, including both gastric and duodenal ulcers.

a general term for various types of sores, skin ulcers, or festering skin diseases

a painful swelling on the body surface or a skin lesion; the early stage of a skin infection or abscess that has not yet ruptured