I have an armpit rash that won't go away. i stopped using roll-ons and sprays, tried prescribed and offthecounter creams, sensitive products but it won't go away. i suspect im allergic to sweat because i also have itchiness and rashes in pubic area.

Under arm rash : It is hard to say what the rash is without looking at it in person. It could be anything from a fungal rash to something more concerning such as hidradenitis suppurativa. Both of which require totally different treatments. Since you have not had any luck taking care of this yourself it’s time to seek a professional opinion from your PCP. Good luck with curing this rash.