The term Nadi implies the tube-like structures, and the Nadivrana is treated as a sinus. Sinus is a Latin word which means tract. In Ayurveda, this track is called Gati. That entails a lot of pus invasion and a lot of borrow-ing. Nadivrana, or sinus, is classified as a non-healthy ulcer. The sinus is defined as a blind tract that runs from the surface into the tissue and is lined by either granulation tissue or epithelium. The presence of a foreign body (hair follicles, suturing materials, etc.), non-dependent drainage, and infection all contribute to its persistence. Suppose a person ignores an abscess or swelling in its fully suppurated stage, whether doubtful of its condition-ing or even if they neglect to open a fully suppurated abscess. In that case, the pus burrows into the affected part. An abscess or swelling is named Gati Vrana because of the heavy infiltration of pus, and Nadivrana be-cause of many recesses or cavities in its interior. There are five varieties of Nadivrana (sinus): Vata-ja,Pittaja,Kaphaja,Tridoshaja, and Shalyaja. Because of its non-healing quality, Nadivrana is classified as dustha vrana in classical works. The pilonidal sinus is a small tract extending from a skin opening in or near the cleft.[1] Because of its non-healing quality Nadivrana is classifiedas dustha vrana in classical works. The pi-lonidal sinus is a small tract that leads from a skin opening in or near the cleft at the top of the buttocks and con-tains hairs (Pilo-prefix meaning hair-Oxford dictionary). Pilonidal sinus was most common throughout the third decade. It affects men more than women, with a roughly 6:1 male-to-female ratio. There is no therapeutic thera-py for Nadivrana in modern science [2].