Hi. Greetings. Fungal infection is quite common, especially more common in men. This is often related to humidity, tight clothing, excess sweating and accumulation of moisture. You'll need to keep the area dry, wear lose clothing. You'll need to see a dermatologist for confirmation of infection and treatment with oral antifungals and creams. If there's resistance to one particular medicine like sporanox another medicine like terbinafine may be needed for a longer duration depending on your improvement. DO NOT USE OVER THE COUNTER CREAMS LIKE BETNOVATE GM OR PAN DERM OR QUADRIDERM... this will only prolong the infection. Don't share towels and soaps. Use a dusting powder like abzorb or candid gold to prevent recurrence. Hope this helps. Warm regards, Dr Govind Suresh Mittal, Excel care hospital, Bangalore.