What type of scar is characterized by excessive collagen deposition that extends beyond the original wound boundaries?

A keloid scar is characterized by excessive collagen deposition that extends beyond the original wound boundaries. This type of scar occurs when the body produces too much collagen during the healing process, resulting in a raised and often thick scar that can grow larger than the original injury itself. Keloids are typically firm, rubbery, and can vary in color from flesh-toned to dark brown or black.

They are more common in individuals with darker skin tones and can occur anywhere on the body, although they are especially prevalent in areas that are frequently injured or have a lot of tension. Unlike hypertrophic scars, which may also be raised but remain within the margins of the wound and have a chance of improving over time, keloid scars do not regress and can continue to grow even after the initial injury has healed. Understanding the nature of keloid scars is important in physical therapy and wound care management to help tailor appropriate treatment strategies for patients.