Why Do Hypertrophic Scars Form?

Hypertrophic scars occur when there is a lot of tension around a healing wound. These scars are thick and raised, and often red in color. They may remain like this for several years. Hypertrophic scars are the result of an imbalance in collagen at the site of the wound.

When does a scar become hypertrophic?

Hypertrophic scars usually begin to form six to eight weeks after injury and reach a plateau by six months. Unlike keloids, hypertrophic scars often occur over extensor surfaces, such as the elbows and knees. When located over joints, debilitating contractures may result.

Why do hypertrophic scars hurt?

Scar tissue forms after an injury, and it can develop on the skin's surface or inside the body. For some people, scar tissue may cause pain, tightness, itching, or difficulty moving. Due to the way that scar tissue matures over time, these symptoms may occur years after an injury.