Here are few remedies:
Apply a paste of mustard seeds over the affected areas. Wash the area thoroughly with hot water before application of paste.
Rub a few slice of unripe papaya twice daily on the ringworm patches.
Drink plenty of water and bathe twice daily. Rub the area vigorously with palm before taking bath.
Get fresh air as much as possible. Take sunbath early in the morning.
Avoid tea, coffee, all condiments, white flour products, tinned and bottle foods.