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, ...

This procedure works well for a pilonidal sinus and there are no serious concerns about its safety. A pilonidal sinus is a small infected cavity under the skin between the buttocks, just above the ...

Also known as a pilonidal cyst, the condition forms when a sac of tissue fills with air or fluid in the crease of your buttocks. Pilonidal cyst, doctors say, is mostly caused by a skin infection.

Evidence-based recommendations on endoscopic ablation for a pilonidal sinus in adults. This involves applying heat to the pilonidal sinus. Interventional procedures guidance 646 has been migrated to ...