A sharply elevated, irregularly shaped, progressively enlarging scar resulting from formation of excessive amounts of collagen in the dermis during connective tissue repair. It is differentiated from a hypertrophic scar (CICATRIX, HYPERTROPHIC) in that the former does not spread to surrounding tissues.

An elevated scar, resembling a KELOID, but which does not spread into surrounding tissues. It is formed by enlargement and overgrowth of cicatricial tissue and regresses spontaneously.

A type of acneiform disorder in which secondary pyogenic infection in and around pilosebaceous structures ends in keloidal scarring. It manifests as persistent folliculitis of the back of the neck associated with occlusion of the follicular orifices. It is most often encountered in black or Asian men.

Connective tissue cells which secrete an extracellular matrix rich in collagen and other macromolecules.

The fibrous tissue that replaces normal tissue during the process of WOUND HEALING.