Keloids are overgrowths of scar tissue that follow skin injuries. Keloids may appear after such minor trauma as ear piercing. Dark skinned individuals tend to form keloids more readily than lighter skinned individuals.
Review Date 11/10/2020
Updated by: Ramin Fathi, MD, FAAD, Director, Phoenix Surgical Dermatology Group, Phoenix, AZ. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.