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. About Bruises "Bruises" is a song by Scottish singer-songwriter Lewis Capaldi. It was initially self-released independently on 31 March 2017, later being re-released as a digital download on 16 May 2017, after signing to Virgin Records, as the lead single from his debut extended play Bloom and his debut studio album Divinely Uninspired to a Hellish Extent. Read on to learn more about what’s causing your bruising and how to treat it.