Keloid scars
A keloid scar is a thick, puckered, itchy cluster of scar tissue that grows beyond the edges of the wound or incision. They are often red or darker in color than the surrounding skin. Keloids occur when the body continues to produce the tough, fibrous protein known as collagen after a wound has healed.

This thick, over-grown cluster of scar tissue
on the earlobe is a keloid scar. Here it has been
removed and the incision closed with stitches,
leaving a thin scar.

Keloid scars can appear anywhere on the body, but they're most common over the breastbone, on the earlobes, and on the shoulders. They occur more often in dark-skinned people than in those who are fair. The tendency to develop keloids lessens with age.

Keloids are often treated by injecting a steroid medication directly into the scar tissue to reduce redness, itching, and burning. In some cases, this will also shrink the scar.

If steroid treatment is inadequate, the scar tissue can be cut out and the wound closed with one or more layers of stitches. This is generally an outpatient procedure, performed under local anesthesia. You should be back at work in a day or two, and the stitches will be removed in a few days. A skin graft (see the section on skin grafting) is occasionally used, although the site from which the graft was taken may then develop a keloid scar.

No matter what approach is taken, keloids have a stubborn tendency to recur, sometimes even larger than before. To discourage this, the surgeon may combine the scar removal with steroid injections, direct application of steroids during surgery, or radiation therapy. Or you may be asked to wear a pressure garment over the area for as long as a year. Even so, the keloid scar may return, requiring repeated procedures every few years.

 

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