Raw skin between legs frequenly?

I swet a lot. And the swet gets in between my legs and irritates the skin into just a burning raw rash. This also can sometimes work up a fowl smell down there too. It gets bad enough walking becomes extremly painful. What can I do to prevent this? I swet a lot but I can't use anti perperants cuz I have kidney issues. I can't use powder it dosent work. Baby powder mixed with sweat wow what a rank smell that is. Anyways any suggestions?