When the boundary of the skin is crossed or cut, it heals with a scar. New skin scars are thick and full of blood vessels, but over a period of several months they become flatter and the blood supply decreases.
Skin scars that remain thick and wide but are confined to the area of the original injury are called hypertrophic scars. Hypertrophic (overgrown) scars are usually flesh-colored, pink, or red, and are dome-shaped. They can have areas with many prominent, tiny red blood vessels or areas that are flat and shiny within the raised, broad scar.