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Bruises Overview. A bruise is a common skin discoloration that results from the breakage of tiny blood vessels leaking under the skin after a traumatic injury. Blood from damaged blood vessels beneath the skin collects near the surface of the skin to appear as what we recognize as a black and blue mark.This mark is from skin discoloration by red blood cells and their contents. A bruise is also known as a contusion.lood from damaged blood vessels beneath the skin collects near the surface of the skin to appear as what we recognize as a black and blue mark. This mark is from skin discoloration by red blood cells and their contents. A bruise is also known as a contusion.
To help bruises fade quickly, avoid taking acetaminophen or painkillers that are not prescribed. An ice pack, which can help a bruise fade. Resting will help bruises heal on their own more quickly. Rubbing a banana on a bruise can help it fade. A person with a bruised toenail. Applying pure witch hazel, from the witch hazel plant, may help heal bruises.