A bruise, or contusion, is caused when blood vessels are damaged or broken as the result of a blow to the skin (be it bumping against something or hitting yourself with a hammer). The raised area of a bump or bruise results from blood leaking from these injured blood vessels into the tissues as well as from the body’s response to the injury. A purplish, flat bruise that occurs when blood leaks out into the top layers of skin is referred to as an ecchymosis.
A contusion is essentially a bruise that affects the tissue of the brain. The prognosis of the condition is usually good, and patients can lead long and happy lives after receiving a diagnosis. There are many things that patients need knowledge about before and after meeting with a doctor.