at times can be recurrent or refractory to treat, nevertheless it can be completely treated. Seems like your spouse has been managing it on his own. Firstly one should wear lose fitted cotton under clothes. The area should always be completely dried and it is a good idea to dust that particular area with antifungal powder. Secondly, ask your husband to consult a dermatologist
so that confirmed diagnosis of fungal infection can be made and further tretment in form of oral antifungal
or terbinafine) and antifungal cream be prescribed. It is necessary to rule out fungal infection as certain other diseases too can mimic fungal infection in that area. Take care.