... with sulfa and I still have painful infection? i have a skin infection in my armpits that has red painful boils. have seen dermatologist to no avail. Regular family dr keeps treating with sulfa drugs ... Still have infection..bathe regular and no sharing of bedding or washcloths or towels ..this has gone on for a long time... any suggestions would be greatly appreciated. not shaving and no use of deodorant..wash daily ...