A pilonidal cyst is a sac filled with hair and skin debris that forms at the bottom of your tailbone. The recovery time after surgery depends on the procedure type and if you need stitches. In some ...

Q: My son, 17, developed a pilonidal cyst in June and also had a bad infection from it. The surgeon refused to operate while he was infected. The cyst was just gross - so much blood and other yuck.

Experts don’t agree on exactly what causes pilonidal cysts. If you sit for prolonged periods or wear tight clothing, you may be at higher risk of getting these cysts. (5) Some believe ingrown hairs ...