• Definition

    Keloids are the excess growth of scar tissue at the site of a healed skin injury.

    Alternative Names

    Hypertrophic scar; Keloid scar; Scar - hypertrophic

    Causes, incidence, and risk factors

    Keloids occur from such skin injuries as:

    • Acne
    • Burns
    • Chickenpox
    • Ear piercing
    • Minor scratches
    • Surgical cuts
    • Traumatic wounds
    • Vaccination sites

    They are more common in people ages 10 to 20, and in African Americans, Asians, and Hispanics. Keloids often run in families. Keloidosis is a term used when many or repeated keloids occur.