A Pilonidal sinus is a tract, small cyst or abscess that occurs in the cleft of the buttocks. It can cause severe pain and often becomes infected. What Are The Causes Of Pilonidal Sinus Disease ? Causes of Pilonidal sinus is believed to be chiefly bifactional Seen in hirsute (hairy individuals) individuals with potential for free hair to lie within the natal cleft Presence of pits/dimples within the natal cleft area that promote the entrance of loose hair/debris into the subcutaneous tissue How Are Pilonidal Sinus Treated? Once a pilonidal sinus has been definitely identified, surgery is the treatment of choice. Sometimes if this condition manifests with an abscess formation, then a procedure to drain the abscess will be required as a pre – requisite. Occasionally abscess drainage alone may suffice. Surgery is done under General Anathesia where the entire diseased complex is excised. Primary closure of this wound is almost always d...