They develop where the skin has recovered after an injury and a raised scar is evident. They have the potential to become far bigger than the wound that first resulted in the scar. A keloid can result from anything that can leave a scar. This includes having pimples, getting burned, getting tattooed, and getting cut (accidentally or following surgery). African or Asian skin is more likely to develop keloid scars, and Caucasian patients using anabolic steroids, such as bodybuilders at a gym, are also more at risk.
Both hypertrophic and keloid scars are treated with steroid injections. The scar is injected with the steroid, typically Kenalog (Triamcinolone). It acts as a powerful anti-inflammatory, suppressing abnormal scar tissue and reducing its appearance. Steroid injections work by breaking the bonds between collagen fibres, reducing the amount of scar tissue beneath the skin. Steroid injection treatments reduce the size of scarring by actively reducing the amount of scar tissue that develops.