Bruises appear when an injury leaves the skin intact but damages the small blood ... On its own, hemoglobin is dark red, but ...

Bruising occurs when blood becomes trapped under the skin, usually following an impact injury that damages small blood vessels. However, not all bruising has a simple explanation. Although random ...

But what exactly is a bruise? Bruising can occur as a result of an injury or a knock; blood vessels underneath the skin break or burst and blood leaks out under the skin. This causes the purplish ...