Most cases of bruising under the skin are not too serious. However, bruised skin is a sign that the body is experiencing damage and needs proper care and treatment.

Typically, when small blood vessels under the skin are damaged, bruising occurs. However, these bruises can change in color during the healing process, which is why many people think that the skin turns yellow. The reason for the yellowish bruises on skin is that the blood vessels below the skin's surface have ruptured or the bruise is in the healing stage.