Medically reviewed by Soma Mandal, MD Petechiae are tiny red, purple, or brown spots on your skin, inside of your mouth, or ...

Petechiae can form just about anywhere on your body, ... Petechiae are tiny red, purple, or brown spots that appear on the skin when a blood vessel breaks. Often, they’re harmless.

As the body ages, the skin becomes thinner and more delicate. Over time, exposure to ultraviolet (UV) rays weakens the connective tissues that hold the blood vessels in their place.