YEAH I HAD NEVER HEARD OF IT EITHER, i went to my doctor all panicky and worrying that it was actually like idfk, fucking lupus or some shit, but nah. it's just that shit
it's not even a big deal. it's just that there is a lil yeast buddy that normally lives on your skin and causes no problems whatsoever, but every so often your immune system UTTERLY FLIPS THE FUCK OUT ABOUT IT so the anti-fungal creams are the fix to get said immune response to also calm the fuck down.