Keloid scars are overgrown pieces of scar tissue that extend past the site of the original wound or injury, according to Medline Plus. They are usually by acne, burns, chicken pox, ear piercings, scratches, cuts or wounds. Keloids tend to be genetic, and they are common in young women and African-Americans. Symptoms consist of itchy flesh-colored, red or pink lumpy skin lesions. Complications are rare, but they can include excess tissue growth, tenderness and changes in the appearance surrounding the affected skin.
Overgrowth of Tissue
A common complication associated with keloids is an overgrowth of tissue at the site of the previous injury, according to the website NHS Choices. Keloids often extend past the site of the original wound to the surrounding healthy skin, which causes the excess skin to appear saggy, elevated or lumpy. Keloid scars that form on the face, upper back or ears tend to be larger and more visible than those on other parts of the body. Keloids are hereditary, so there is a strong chance that they will regrow if they are surgically removed.
Tenderness and Irritation
People who have keloids often report tenderness and irritation at the scar tissue site, according to the website Medline Plus. Keloids can get fairly large, and they have a tendency to be tender, painful or itchy as the scar tissue expands. Clothes that are too tight can rub keloids and cause them to become painfully sore. In addition, scar tissue that covers large areas of skin can restrict movement and cause discomfort when the skin is stretched.
Cosmetic Changes
People with keloids may experience a change in the appearance of the scar tissue over time. Keloids often darken approximately a year after they are formed, according to the University of Maryland Medical Center. Many times they appear darker then the surrounding skin making them more visible. The dark coloring is usually temporary, but in some cases it may be permanent. Keloids that have been surgically removed often return and grow beyond the original scar tissue site. Some people with keloids experience emotional and psychological distress due to their large and disfiguring appearance.
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