Pilonidal cyst Sacrococcygeal fistula

• Facts:
  Believed to develop from chronic activity involving sweating and friction of the skin overlying the coccyx within the superior gluteal cleft
  
  Most prevalent in young males, especially those with excessive body hair
• History / PE:
  Pain, swelling over coccyx
• Treatment:
  Drainage
• Complications:
  Chronic sinus tract