Keloids
DESCRIPTION AND SYMPTOMS
Keloids are the result of abnormal wound healing. Normally, there is a balance between the production and the breakdown of collagen, which is a protein that makes up the fibres in the skin. With keloidal scars, the cells in the skin called fibroblasts produce excessive amounts of collagen. The collagen fibres are also thicker and wavier. This leads to the thick, raised appearance that is characteristic of keloidal scars.
Keloids are usually firm, raised, shiny, and smooth. They are often pink or red, or much darker or lighter in colour than the surrounding skin. Keloids always extend beyond the limits of the original wound, sometimes by many centimetres. The colour, shape, and size of the scars may change with time. They are generally not painful, though they are often itchy.
METHODS/SOLUTIONS
Laser therapy is now used to treat many types of skin problems, including keloids. It is often combined with steroid injections to give the best cosmetic result.
Silicon gel dressings are a popular alternative to steroid injections, although there is only limited evidence suggesting the dressings are effective in preventing abnormal scarring in people who are at high risk of developing keloids. Other treatment options include radiation therapy and medications such as interferon*, 5-fluorouracil, imiquimod, and bleomycin.
If you have a history of forming keloids and are having surgery, discuss with your surgeon any strategies to prevent keloid formation. Also, those with a tendency to form keloids may want to avoid any unnecessary piercings or surgeries.
EFFECTS/ CAUSES
Keloids usually occur at the site of skin damage (e.g., acne, burns, chicken pox, cuts, insect bites, piercings, surgery, tattoos, vaccinations), although they can occur spontaneously. Whether or not a keloid will form is not determined by the severity of the wound – even a minor skin abrasion can result in keloid formation.
Keloids are benign (noncancerous), fibrous skin tumours. They are most common in people with darker skin (e.g., people from West Africa or Southern India). People usually develop them between the ages of 10 and 30. Men and women are equally likely to have keloids. Keloids may also run in families
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