If your are reading this you have my sympathy!! I'm not a vain person but this PR made me so self conscious! Like how you are or have been doing is looking online for some answers because the doctors would have said it's not fungal, not harmful and will go away on its own. So first is take a deep breath is not life threatening!!
Some facts I read, it starts with a herald patch which looks like ringworm but then the worst comes with a spread of a rash, usually confined to your body and rarely goes to the face. Bad news lasts 4-8 weeks or up to 6 months so as I'm getting married in a few months I did freak out!
Treatment that worked for me and commonly said by others: Head & Shoulders intensive care (blue bottle) washed 2x a day help calm the red rash down but only with Luke warm water. Hot water made spots so more red! Then Aveeno cream after to moisturise as they will get dry and flake which can make then itchy but don't scratch !
As I'm in Uk the weather does not bring any natural UV so as a virgin tanner I tried the sunbed. Anyone new to tanner suggest only 5 mins max esp if you have no base tan you may burn. After 1 session rash looked very red but the next day it was a massive improvement!
Now in week 4 they are going. Signs of it going is that they get darker and peel and you eventually see your own colour back in the spots.
Keep persisting with it as it doesn't go away quickly and spots do have to run the course and some spots expand but don't worry think that's normal, was for me. My timeline week 1 I found herald patch and rashes over my body and back, week 2 diagnosed with PR, week 3 treatment and week 4 half cleared and other starting to go.
hope this helps you and good luck