Hi dear , I have gone through your question and i understand your concern.
From the description, it seems to be abscess. It may be
pilonidal sinus (PNS) is a small cyst or abscess that occurs in the cleft at the top of the buttocks. A PNS usually contains hair and foul smelling abscess is formed.
To treat the same, you may follow these suggestions
Do warm water compresses of the lesion at least thrice in a day and apply
mupirocin or
fusidic acid cream over affected area.
Drainage of abscess and packing is required by qualified medical practice nor/
general surgeon to prevent its recurrence.
if its too painful, take a painkiller like
diclofenac.
Antibiotic like amoxiclav is required to eradicate any persistant infection.
This condition can be easily dealt and resolution occurs in 4wks with complete healing.
Hope you find the answer helpful, please do get back for further queries I will be happy to assist you.Please rate 5 stars for finding benefits with this information it will ignite me to help more.
Wishing your good health.
Regards
Dr.Vigyan Mishra