Bruise What is it? A bruise forms when blood vessels under the skin break. The trapped blood creates a bruise that's black, purple or blue then changes color as it heals. Plan of Action: Elevate the bruised area above heart level, if possible. Apply an ice pack wrapped in a thin towel. Leave it in place for 20 minutes. Repeat several times for a day or two after the injury. This helps to reduce the swelling and pain. If the bruised area is swelling, put an elastic bandage around it, but not too tight If the skin isn't broken, you don't need to bandage a bruise. Consider taking a nonprescription pain reliever if needed. Consult your health care provider if you: Have very painful swelling in the bruised area Suspect a bruise has been caused by child abuse, domestic violence or elder abuse Are still experiencing pain three days after a seemingly minor injury Have frequent, large or painful bruises Have bruises that begin suddenly or seem to develop for no reason Have a personal or family history of easy bruising or bleeding Notice a lump form over the bruise, which may be a sign of pooling blood, also called a hematoma Have unusual bleeding, such as from the nose or gums