Continue the treatment exactly as prescribed by your dermatologist.
Keep affected areas dry.
Change underwear and clothes daily.
Avoid sharing towels.
Avoid steroid-containing creams (such as combinations with clobetasol, betamethasone, etc.), as they can make fungal infections harder to treat.
Next Steps
Revisit your dermatologist.
A KOH skin scraping test or fungal culture can confirm whether it is truly a fungal infection.