Ringworm of the scalp is an infection of the hair caused by a fungus. The fungus causes the hair to break. Combs, brushes, hats, barrettes, seat backs, pillows, and bath towels can carry the fungus. A worm does not cause ringworm.
If your child has scalp ringworm:
Your child will not spread the fungus to others after your child starts to take the medicine and you wash your child's hair at least one time with the special shampoo.