Application of local
antifungal cream(terbinafine, clotrimazole, econazole, ketoconazole, miconazole) and oral
antifungal drugs are the mainstay of treatment.
If even after treatment itching persists,then other possibilities like contact dermatitis,eczema,dermatitis,sweat dermatitis or heat rashes have to be ruled out.Pls consult a dermatologist then as without examination,confirmation of a diagnosis is tough.
Hope it helps.Take care and regards.