Bat wing syndrome or
Tinea Cruris
(warning, the pic is a little gross)
This may be more sharing than people want from me, but a couple of years ago I had exactly what is shown in that picture. The tinea cruris was a nuisance but tolerable. The anti-fungal cream would relieve the discomfort in a day or two, and clear up the rash in a couple of weeks. The problem was that it kept coming back. After trying many different things, I switched from corn starch powder to talcum powder, and the rash hasn't returned since. But it's only been a few months since my last outbreak, so every time I feel a little bit itchy down there, I wonder if it's coming back again.
The intertrigo, on the other hand, was excruciating. It felt like I'd spilled acid on my inner thighs. My underwear felt like it was made out of sandpaper, and I had to wear it inside out because my skin was so sensitive the stitching felt like hot razor wire cutting into me. Even walking a short distance was intolerably painful, so doing routine tasks (e.g., going grocery shopping) became an ordeal, and it pretty much became impossible to go out and have fun. The dermatologist I was seeing could offer me nothing for the pain. Every time that rash started to clear up, something would make it flare up again. It took over a year to get rid of, and my dermatologist warned that the inflammatory cells would still be present for a couple of years after the rash was gone, and could be triggered at any time during that long healing period.
