Keloids can develop in any place where skin trauma has occurred. If a keloid appears when someone is still growing, the keloid can continue to grow as well. Keloids can sometimes be sensitive to chlorine. They can occur as a result of severe acne or chickenpox scarring, infection at a wound site, repeated trauma to an area, excessive skin tension during wound closure or a foreign body in a wound.
They can occur at the site of a piercing and even from something as simple as a pimple or scratch. Although they usually occur at the site of an injury, keloids can also arise spontaneously. They can also range in color from pink to red. Collagen, used in wound repair, tends to overgrow in this area, sometimes producing a lump many times larger than that of the original scar. They have the capability to hurt with a needle-like pain or to itch, the degree of sensation varying from person to person. Keloids expand in claw-like growths over normal skin. Keloids should not be confused with hypertrophic scars, which are raised scars that do not grow beyond the boundaries of the original wound. There is a higher tendency to develop a keloid among those with a family history of keloids and people between the ages of 10 and 30 years. In the United States keloid scars are seen 15 times more frequently in people of sub-Saharan African descent than in people of European descent. In severe cases, it can affect movement of skin. A keloid scar is benign and not contagious, but sometimes accompanied by severe itchiness, pain, and changes in texture. Keloids are firm, rubbery lesions or shiny, fibrous nodules, and can vary from pink to the color of the person's skin or red to dark brown in color. It is a result of an overgrowth of granulation tissue (collagen type 3) at the site of a healed skin injury which is then slowly replaced by collagen type 1. Is the formation of a type of scar which, depending on its maturity, is composed mainly of either type III (early) or type I (late) collagen. Keloid, also known as keloid disorder and keloidal scar,
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