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Having body hairs which have grown in a concentrated area on the skin and formed a cyst or abscess.
From Latin pilus (“hair”) and nidus (“nest”)
From Wiktionary
Has the operation to remove a pilonidal abscess changed much in the last 32 years?
This is a pilonidal sinus with multiple sinus tracks on either side of natal cleft.
A pilonidal sinus is a small hole or tunnel in the skin, usually at the very top of the cleft between the buttocks.
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