A bruise appears after a blow to the head or trunk, which could indicate internal injury. If you are experiencing specific symptoms,
When a blunt force impacts the body, it may not break the skin, but it can rupture the delicate capillaries underneath. This trapped blood initially appears as a flat or slightly raised mark. Over time, the body’s immune system breaks down the blood and reabsorbs it, which causes the bruise to change colour. The Colour Cycle Lividi
Around day 5–10, the body begins breaking down haemoglobin into biliverdin . A bruise appears after a blow to the
Within 1–2 days, the blood loses oxygen and becomes darker. it may not break the skin