i can understand that it is very frustrating to get recurrent skin infection. However it is better that you show to a qualified dermatologist and follow up with the same doctor. Many times the fungus can be resistant to the medicines which are routinely given for it and in that cases you will need prolonged treatment for many months. Do not stop treatment on your own as soon as you see an improvement. You may need to undergo a couple of tests also if required.
Health Tips
Avoid any OTC creams such as betnovate, panderm, fourderm, candid b , clop gm, clobate g, candiderma etc as these contain steroids and they will cause damage and only worsen the rash.