What is a Pilonidal Sinus?

A pilonidal sinus (PNS) is a tiny hole or a tunnel inside our skin. It may however fill with pus or fluid, thereby leading to the formation of a cyst or an abscess. It usually occurs in the cleft right at the top portion of our buttocks. A pilonidal cyst most commonly comprises hair, dirt, and debris. It may cause unbearable pain and can also often become infected. In case it does become infected, it may start to ooze out pus and blood with a foul odor.



  • Lumps
  • Swelling
  • Redness
  • Pus
  • Pain at the tailbone area
  • Redness of the skin around the tailbone


  • Changing hormones - usually after puberty
  • Excessive hair growth
  • Using rugged clothes
  • Friction on the skin

Pilonidal Sinus is a condition that more commonly affects men as compared to women and young adults are much more vulnerable to it. Furthermore it is even more prominent in individuals who tend to sit a lot such as the workaholics and the cab drivers.

Dr. Yogesh Taneja

Senior urologist

Dr. Yogesh Taneja is a highly skilled Urologist and a General Surgeon who holds 14 years of work experience and he primarily practices at Sai Siddhi Urology Multispeciality Hospital located in Gurgaon, Sector-46, Haryana. He is also associated with Medeor Hospital, Manesar, Gurgaon and at Sai Uro Clinix in Sector - 8, Gurgaon.

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