Get all the news you need in your inbox each morning. Bruises, also called contusions, appear as red, brown, bluish-purple, yellow or black circular blemishes on one's skin. They occur when small ...

Like a bruise, a hickey can change color over time. "They start out purple, then go to pink, then green, then yellow then fade completely," Zeichner says. A hickey will go away after about a week ...