Actually yes. You can send him to the doctor for a prescription of Diflucan. It was originally made to fight yeast infections. But it also works wonders with ringworm, out team used to take it as a precaution and no one ever got ringworm during the season.
Aside from that you have to keep him off the mat for at least a week or more, change his bed sheets and pillow cases every night! and wash them. Make sure he showers both in the morning and immediatly after wrestling practice. That should clear him up .
