In addition to what Scott mentioned, there are various anti-fungal creams that can be used to control the itching, if it is in fact fungal. I once got a prescription for one called ketoconazole cream:
https://www.webmd.com/drugs/2/...ream-topical/details
Another option, for non-fungal itching, is to use zinc oxide combined with an over the counter steroid cream that is for itching. Like Cortizone 10:
https://www.amazon.com/Cortizo...3371652172&psc=1
Dermatologists typically scrape the skin in the area that is itching and can determine by microscopic analysis (in less than 30 seconds) whether it is fungal or not.
I have lately been plagued by small, red itchy patches of skin on my upper thighs. These were determined to be non-fungal swaths of eczema. The cause is unknown.