What is a pilonidal cyst?
A pilonidal cyst is a small sac inside the skin that is usually located near the tailbone at the top of the buttocks crease. Pilonidal (say: “pie-low-NYE-dull”) means “nest of hairs.” A pilonidal cyst can contain hair, skin fragments and other abnormal tissue.
Anyone can have a pilonidal cyst, but it is more common in young men.
Written by familydoctor.org editorial staff