Thanks for query.
If there is fungal infection
then you have to go for oral anti fungal tablet like Flucanozole 150 mg once in a week for 4 weeks for permanent cure.
Take this medicine after consulting your doctor.
Apply anti fungal cream or lotion or powder locally.
Take antihistamine like cetrizine
as and when required.
Keep that part clean,dry and airy.
Ok and bye.