miconazole, ketoconazole, or one of these in that family.
My personal physician, a GP had me try one like that, it returns.
I suspect the problem is the moisture, allows the yeast/fungus to remain over the long term.
I even had a fan under my desk at work!
“Horses sweat, men perspire and ladies glow”
I sweat!
Perhaps longer.
All the antifungals that are effective are given so that the medicine permeates into the skin or hair cells and saturates, usually given oral. Then when the fungus grows, it gets inhibited from growing.
Takes a while, especially if you have a slow reproducing organism.
The topicals are mostly for spot application, don't usually work for the deeper entrenched varieties.
Keep asking for referrals to the dermatologist, and if one appears to vapor lock, go to another.
Some samples take a long time to plate out on appropriate media.Most critters and plants that grow on us can be rid of, sometimes takes a while.
Good luck
Say a prayer for the fallen.