Apilonidal sinus (PNS) is a tiny opening or tunnel in the skin. It might swell up with liquid or pus, leading to the development of a cyst or abscess. It appears in the buttocks’ upper cleft. Hair, sand, and other debris are frequently seen in a pilonidal cyst. It may be excruciatingly painful and usually becomes infected, leaking pus and blood with an unpleasant odour. APNSis a disorder that mostly affects men and is common among adolescents and
young adults. Also, those who spend a lot of time sitting down, such as cab drivers, are more likely to experience it.
Causes of Pilonidal Sinus
This condition’s specific cause is unknown; however, it is thought to be a result of a mix of reasons, such as shifting hormones, hair growth, friction from clothing, or sitting for extended periods of time. Sitting might force the hair in the region to push back beneath the skin because of the friction it creates. The body responds to this hair in a manner similar to how it would to a splinter by mounting an immunological attack against it since it perceives it as foreign. The cyst that surrounds your hair is created by this immunological reaction. It could be worse when several sinuses can occasionally
join under the skin.