Painful / burning / itching rash on inner thighs, need advice
I've had rash issues around my genitals before that I went to the dermatologist for. At the time it was just really persistent dermatitis (according to the biopsy etc). This feels different than my issue before, this rash burns and makes my skin feel tight. This is on my inner thighs, both sides.
More context and hopefully helpful info:
I'm 33, male, 5'9", 215lbs. Recently started doing a lot of cardio to lose weight. I switched to new underwear for working out (polyester I think). It felt more like a friction burn at first so I laid off the cardio for a bit and used some Triamcinolone Acetonide Cream (0.1%) on it that I had leftover from my last issue, which didn't really help. I also had tried medicated body powder, which I realized after the fact had 0.1% menthol so maybe that's a factor. Lately I've been using Opzelura Ruxolitinib cream 1.5% on it, again which I had leftover, and that actually does provide relief for a few hours, but after several days of that, the rash is still there and seems to have spread if anything.
I'm hoping someone can identify it based on the red bumps on the outside, any help is appreciated.