Keloid

A raised, hard, irregularly shaped, itchy scar on the skin due to a defective healing process in which too much collagen is produced, usually after a skin injury. Keloids can develop anywhere on the body, but the breastbone and shoulder are common sites. Black people are affected more than whites. After several months, most keloids flatten and cease to itch. Injection of corticosteroid drugs into the keloid may reduce itchiness more quickly and cause some shrinkage.