Scars are visible signs that remain after a wound has healed. They are unavoidable results of injury or surgery, and their development can be unpredictable. Poor healing may contribute to scars that are obvious, unsightly or disfiguring. Even a wound that heals well can result in a scar that affects your appearance. Scars may be raised or recessed, different in color or texture from surrounding healthy tissue or particularly noticeable due to their size, shape or location.