I don't have puppps but I do have some other type of hormonal rash. Dr though it was viral for a week it was so bad. Try applying undiluted apple cider vinegar to the rash, a) I've found it helps relieve the itch and b) it has helped clear the rash up. It's still there (I think four weeks now boo) but the acv made it less angry and aggressive looking.
Seen the doctor and he goes just let me consult with Dr google lol, well at least he was honest in not knowing haha but he had never heard of PUPPPS so he called in another Dr and she thinks its PUPPPs but wants to review me in a week.
Bookmarks