Pilonidal sinus:

The coccyx fistula mostly affects younger patients between 20 and 30 years. In the acute stage, there is a painful accumulation of pus (abscess); the chronic stage of the disease is characterized by fistulous tracts. Also at this stage of the disease there may be pain over the coccyx. However, the formation of a fistula usually manifests itself with the discharge of cloudy, bloody fluid, so that soiling of the underwear is noticeable.


Therapy depends on local findings. If an acute abscess is present, an opening is performed to achieve relief. This is followed by complete removal with an open wound treatment.