Bruising or bruising generally occurs when the body hits something strongly. However, some people can experience bruising only because of minor collisions or even no collisions at all. To better understand the cause of bruising, consider the following review! Bruising occurs when a small blood vessel ruptures, so the blood cells inside it seep out and settle under the surface of the skin. This causes reddish or purplish appearance on the skin. Naturally, platelet cells (platelets) in the blood will work together with blood clotting factors to form clots to stop this bleeding. Then the blood cells will be absorbed again by the body slowly and the bruises fade. Some Causes of Easy Bruising Most bruises or bruises are caused by physical injury, and can improve on their own within a period of several days. However, if bruising often occurs without a clear or sudden cause, it is likely that it is caused by a disease or certain medical condition, such as: 1. Lack of blood clotting fact...