Boil close to butt cheeks/Anus.

I recently got a boil near the butt cheeks or close to the anus not sure about the area name. Passing motion has no issue neither while sitting. Yes ofcourse when i sit for longer hours it does pain a bit. A week back i had boil near the same area but it got totally cured in 2-3 days. Later i had boil near the pubic hair area. It also healed in 2 days.Now after a few days there another instance wherein i am getting a boil near the butt cheeks area. Recently this week I decided to clean the area and got the hair removed as well. I have not been sexually active since 3 months Currently medication and treatment: epilepsy dozes(since last 8 years) Sciatic nerve treatment: Vitamin C and tablet called uprise Other treatment: Physiotherapy for sciatica nerve Are these side effects of the medicine or heat generation in that area due to the physiotherapy? Should i consult a dermatologist/surgeon/physician? Thank you.