Pediatric Surgeon, Laparoscopic Surgeon
MBBS, FCPS, FEBPS, FACS, Dip.MAS
Black and blue marks are often associated with bruises. Abruise, or contusion, appears on the skin due to trauma. Examples of trauma are a cut or a blow to an area of the body. The injury causes tiny blood vessels called capillaries to burst. Blood gets trapped below the skin's surface, which causes a bruise.