keloid /kē″loid/ [Gk, kelis, spot + eidos, form] , an overgrowth of collagenous scar tissue at the site of a skin injury, particularly a wound or a surgical incision. The new tissue is elevated, rounded, and firm. People with darker skin are particularly susceptible to keloid formation, but it can occur in all skin types. A tendency to develop keloids runs in families. Types of therapy include solid carbon dioxide, liquid nitrogen, intralesional corticosteroid injections, radiation, silicon gel, and surgery. Treatment may worsen the condition. Also spelled cheloid. Compare hypertrophic scarring. −cheloidal, keloidal, adj.
