(medicine, nursing) An ulcer caused by prolonged pressure on the skin as a person lies in a bed or sits in a chair or wheelchair; preventable with sufficient nursing care.

(pathology) An ulcer of an area of the gastrointestinal tract.

(pathology) A peptic ulcer located at esophagus.

(pathology) A peptic ulcer located in the stomach.

(pathology) A peptic ulcer located in the duodenum.

(pathology) An ulcer in the mouth, caused by a break in the mucous membrane.

(medicine) Synonym of acute necrotizing ulcerative gingivitis

An aphthous ulcer; an open sore in the mouth, or rarely a break in the mucous membrane or the epithelium on the lips or surrounding the mouth.

(medicine) An ulcer on a finger or toe, due to deficient circulation and nutrition. In such cases the extremities are cold.

A gastric ulcer produced by elevated intracranial pressure.