There are no home remedies that effectively treat ringworm, states MedicineNet. A doctor must prescribe an oral medication or a topical ointment to get rid of the fungus. Topical ointments often contain clotrimazole, miconazole, ketoconazole, naftifine and terbinafine, while oral medications contain terbinafine, itraconazole and fluconazole.
Most oral medications take about three months to rid the body of ringworm, states MedicineNet. The fungi that cause a ringworm infection are dermatophytes, states WebMD. The fungus grows on dead skin, creating rings. Without proper medication, the center of the ringworm infection often clears up but leaves a new infection on the outer portion of it. While children are most likely to get ringworm infections, adults can easily get it in locker rooms, pools or any other shared area where it lives on floors and walls.