Keloids are an overgrowth of scar tissue that forms after a skin injury such as a surgical incision or wound. A keloid may be red, pink or flesh-colored and forms over the site of the injury as a nodular or ridged growth. The cause of keloids is unknown, but they are believed to be a result of the body's failure to end the healing process and stop repairing skin. They may be hereditary as well.

Treatment for keloids is not usually necessary since they are harmless and may disappear over time. However, for cosmetic purposes, cryotherapy, steroid injections or laser treatments may be used to remove the keloid.