Ringworm in humans is generally treated with antifungal creams and ointments that are applied directly to the affected area. Many over-the-counter antifungal topical creams are available, including Micatin, Mycelex, Tinactin and Lamisil, according to WebMD.
Patients with ringworm are instructed to wash the rash with soap and water before applying the antifungal cream. They should follow directions on the package and apply the cream beyond the borders of the rash. Treatment is needed for two to four weeks and should be continued even after the rash starts to go away, says WebMD. A visit to the doctor is needed if the ringworm infection is widespread or does not respond to different topical treatments. Oral medication, such as Diflucan, may be given.
Ringworm is caused by a fungus and can be spread by direct contact and by sharing towels, clothing, and sports equipment. Athlete's foot is a ringworm infection on the foot, and jock itch is a ringworm infection of the groin. Ringworm causes a rash with large round patches. The edges of the rash may be red and scaly or moist and crusted, and the center may have small, blister-like bumps. The rash can be itchy, and if left untreated, may cause the skin to crack, according to WebMD.