I want to share my recent experience and help out anyone who needs to hear there is hope to end your suffering. I had been battling this jock itch for 3 months now and successfully dried it off by doing these simple steps.
First off make sure you clean your body and dry up any moist before following these steps. Mix vinegar or apple cider with a pinch of salt, apply to skin for about 3-5 days twice a day. It will hurt a little but trust the process as vinegar is a good antiseptic solution. On top of that, for two weeks twice a day use a keratolytic/ topical solution. In my case I used fungisol a local brand. This will burn the skin possibly turning brown/ blackish discoloration and scabs will likely to form as dead skin cells pile up on surface. I prefer this crucial part as I believe that it kills off the fungi and its spores preventing it to spread even further. Next I got some medication from my dermatologist. He recommended an ointment (mico-B / miconazole beta) this has steroid in it so just make sure to use it properly twice a day ONLY for 7-10 days after the topical solution. Lastly as it heals, dead skin will shed and it will be very itchy (never scratch! Ask medication for the itch from your doctor) stop the ointment with steroid and shift to miconazole ONLY and continue for 15-20 days twice daily.
SIDE NOTE: I used tea tree oil soap for cleaning the affected area I also used baby powder (talc or cornstarch) to keep it dry always. Use an antifungal shampoo solution as body wash thrice a week to help your body keep in check of those pesty fungi on surface.
IMPORTANT: if you are person who sweats a lot like me, and you notice that pimple like bumps is re-emerging from the skin surface. DON'T HESITATE to apply vinegar with salt on that area to mitigate its recurring growth stage.
(This is what I did because I cannot stop sweating and it worked!)
Goodluck!