A cyst is a sac or cavity that may be filled with pus, semi-solid material, or air. It doesn’t usually cause pain until it gets large. An abscess is a painful, red infection that’s filled with pus. A ...

There are different types of pilonidal cyst surgery. One involves cutting the cyst to drain the fluid, while another involves removing the cyst completely. Depending on the surgery type, a person can ...

Pilonidal sinus—also called a pilonidal cyst—is a skin infection that occurs in or around the crease of your buttocks. This condition happens when hair, skin cells, and dirt clog a hair follicle, ...

Dr. Sandra Lee, MD—aka Dr. Pimple Popper—posted a brief but memorable Instagram video of an eruption of green pus. The contents of a cyst can become discolored and liquefied due to inflammation and a ...

The belly button is home to many bacteria but can be overlooked when a person washes. Improper hygiene and cysts can cause the belly button to smell. The belly button or navel is a dip in the middle ...