What does pilonidal mean?
A pilonidal (pie-low-NIE-dul) cyst is an abnormal pocket in the skin that usually contains hair and skin debris. A pilonidal cyst is almost always located near the tailbone at the top of the cleft of the buttocks. Pilonidal cysts usually occur when hair punctures the skin and then becomes embedded.
What is the difference between pilonidal sinus and pilonidal cyst?
A pilonidal sinus (PNS) is a small hole or tunnel in the skin. It may fill with fluid or pus, causing the formation of a cyst or abscess. It occurs in the cleft at the top of the buttocks. A pilonidal cyst usually contains hair, dirt, and debris.
What does a pilonidal cyst look like?
It’s called a pilonidal cyst, and it can become infected and filled with pus. Once infected, the technical term is “pilonidal abscess,” and it can be painful. It looks like a large pimple at the bottom of your tailbone. It is more common in men than in women.