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These are thick, rounded, irregular clusters of scar tissue that grow at the site of a wound on the skin, but beyond the edges of the borders of the wound. They often appear red or darker in color, as compared to the surrounding normal skin. Keloids are formed from collagen that the body produces after a wound has healed. These scars may appear anywhere on the body. They occur more often in darker-skinned people. Keloid scars may occur up to one year after the original trauma to the skin. Treatment for keloid scars varies. There is no one simple cure for keloid scars. Recurrence after treatment is common. Treatment may include the following:
- Steroids are injected directly into the scar tissue to help decrease the itching, redness, and burning sensations that these scars may produce. Sometimes, the injections help to actually decrease the size of the scar.
- Cryotherapy involves the scar being "frozen" off by a medication.
- Pressure therapy involves a type of pressure appliance worn over the area of the scar. These may be worn day and night for up to four to six months.
- If the keloid scar is not responsive to nonsurgical management options, surgery may be performed. One type of surgery directly removes the scar formation with an incision, and stitches are placed to help close the wound. Sometimes, skin grafts are used to help close the wound. This involves replacing or attaching skin to an area that is missing skin. Skin grafts are performed by taking a piece of healthy skin from another area of the body (called the donor site) and attaching it to the needed area. Another option is laser surgery. Scars may be treated with a variety of different lasers, depending on the underlying cause of the scar. Lasers may be used to smooth a scar, remove the abnormal color of a scar, or flatten a scar. Most laser therapy for scars is done in conjunction with other treatments, including injections of steroids, use of special dressings, and the use of bandages. Multiple treatments may be required, regardless of the initial type of therapy.