Hi, Welcome to HCM. Tinea cruris is a fungal infection caused by dermatophytes which is a superficial infection involving the skin. Rarely it can cause an allergic reaction to the dermatophyte antigens. I understand that you have been suffering from recurrent fungal infection but treatment for the dermatophyte infection has to be taken as a complete course and further recurrence can be prevented by keeping the involved areas clean and dry. Maintenance of personal hygiene also plays a very important role. I have seen patients who are very troubled about tinea cruris as it involves the genital regions. I suggest you get complete course (6 weeks to 6 months)of antifungal drugs to get a complete cure of the infection. Thanks.