Hi Thank you for asking HCM. I have gone through your query. Your problem can be most likely due to fungal infection, tinea corporis. If you send a picture then it will be more helpful in identifying. If you were my patient with such condition then I would recommend using ointments with combination of antifungal like miconazole and corticosteroid like flucinolone for local application. I also advise fluconazole tab weekly once orally for 1 month to stop recurrence. Change sweaty clothes in time and use loose cotton underwear. Hope this may help you. Let me know if anything not clear. Thanks.