Background: Pilonidal disease is an acute or chronic infection in the subcutaneous fatty tissue, mainly in the natal cleft. Its incidence in Germany in 2012 was 48 cases per 100 000 persons per year.
A pilonidal sinus is a small tunnel that develops at the top of the crease in the buttocks. Trapped hair around the buttocks crease can lead to an abscess, and a pilonidal sinus may develop as a ...