Please talk to your doctor about Hidradenitis Suppurativa. Better yet, do a little research on it first...google it and find out what is is about. It is often misdiagnosed, sometimes for 15 or 20 years. there is no known cause, and no known cure. It is not a common disease and doctors sometimes don't even think about it. If your GP isn't sure...go to a dermatologist. Anyone with 3 or more "boils" a year...males generally in the groin area and buttocks, females in the underarm and breast areas...should learn more about Hidradenitis. Best wishes.
try drawing salve or black tar salve from pharmacy. Should clear up in days