Bruises, also called contusions, appear as red, brown, bluish-purple, yellow or black circular blemishes on one's skin. They occur when small blood vessels, known as capillaries, sustain damage ...

Medically reviewed by Lauren Schlanger, MD A bug bite that looks like a bruise can come from spiders, hornets, wasps, ...

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 ...