Could you be having an allergic reaction to something? Maybe something you wash with, like TM suggested? I could only use Cheer Free for years with difficult child or she would get rashes. Try using the detergent for babies and see if there is a difference.
I went through something similar in a different part of my body :blush: years ago. Was put on antibiotics and antifungal medications and like you would get a couple days of relief and then it would return. Many, many trips to the doctor over a period of months. I finally figured out I can't wear pads. Rash went away.
It might just be a lot of trial and error.
