Bruises that occur without any explanation can be due to underlying health conditions, age, or certain medications. Identifying the cause and seeking medical attention is crucial. Bruises (Ecchymosis) “Ecchymosis” is the medical term for bruises. These form when blood pools under your skin. They’re caused by a blood vessel break. Bruises look like a mark on your skin that’s black and blue or red to purple. Bruises change color as they heal and most don’t need treatment. Unexplained bruises could be a sign of an underlying medical condition. Learn what bruises are, how they form, and how to treat them. Find out the common causes, types, symptoms, and treatments of bruises, and when to see a doctor. Get a clear overview of bruises. Learn how to identify common symptoms like discoloration and pain, and discover effective home treatments to help them heal faster.