Stubborn/Recalcitrant Tinea in Groin.

I have been infected with tinea in groin in 2012. The dermatologist had prescribed me fluconazole tablets and ketoconazole cream. Subsequently started using a dusting powder. The rash remained and no itching or other symptom. Somewhere in 2017, the candid dusting powder started irritating the skin. So I switched to a herbal dusting powder a d it worked much better. In 2019, I realised that the rash is the fungal infection itself and visited a doctor in November.He prescribed generic itraconazole and luliconazole,I used 100mg twice per day for two months.There was no change in rash, itching was anyways not there. After 2 months, 2020 March, I visited another dermatologist with same prescription but with Sun Pharma medicines, the rash lightened. I started using dusting powder. Now the rash is growing darker, and there is severe itching, I can see the reddishness spreading. Does anybody have success in treating very stubborn infection like this? I have not used any steroid cream till now.