I first noticed this under arm rash when i got crutches, and it was on one armpit but then later spread a little to the other, i have had it now since may, and it has gone a way abit and then returned and got worse and more painful, always sore but never itchy. I started to use antifungal cream and it has worked for the majority, but there are still some and it returns when i sweat under my arms, and gets irratated again!
could you please shed some light!