Hi Dear User.
welcome to the platform of HCM
It could be simple boil or it could be pilonidal sinus
, which can be confirmed by general Surgeon
If it is pilonidal sinus. it has to be excised.
And if it is a gluteal abscess
. then it should be treated by Incision & drainage
by surgeon, along with antibiotics and painkiller , regular dressings may be required.
Hope your query is answered