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Cheilosis: definition

A feature of B-vitamin complex deficiency, especially riboflavin and/or pyridoxine deficiency, characterized by redness of the lips with cracking and weeping in the corner of the mouth.

Colitis, Collagenous: definition

Inflammatory bowel disorder characterized by microscopic inflammation of the large intestine consisting predominantly of lymphocytic infiltration and a thickened subepithelial collagen band (beneath the surface).

Colitis, Ulcerative: definition

An inflammatory disorder of the colon characterized by continuous inflammation of the mucosa and submucosa usually with small ulcers, extending from the rectum and typically involving the distal colon, rectum, and anus and producing bloody