How should i cure a fungal infection on the skin?

See below: I would use lotromin or Lamisil (terbinafine) 2 times a day until the rash has resolved.

Various options: Localized fungal infections such as "athletes foot" can be treated with antifungal creams. Some over the counter examples include lamisil, (terbinafine) lotrimin and micatin. More widespread infection or infection of the toenails often require treatment with an oral antifungal. See your doctor if you feel you need an oral antifungal treatment.