Relapsing tinea cruris like this require systemic antifungal therapy. One can choose between griseofulvin, fluconazole, itraconazole, or terbinafine. Terbinafine available as Tablet Sebifin 250 mg can be taken once daily for a month or so. To control itching, antihistamine like Tablet Lazine 5mg once a day for first two weeks may be taken. Therapy need to be taken regularly without interruptions. The pigmentation part will also disappear with that in due course of time.