The summer when I was 20 (40+ years ago), I had a series of nine painfu boils on the back of my upper thigh. They all eventually ran their course & disappeared as mysteriously as they first appeared without any treatment or lifestyle changes. I later had a single one about 20 years ago, but none since then. Dont have any advice as I did nothing for my boils excpt to soak in a very hot bathtub for long periods of time. I know when they're in existence, they can be very painful.