Antifungal medications that can be taken by mouth are used to treat ringworm of the scalp. The medications most commonly prescribed include griseofulvin (Gris-Peg) and terbinafine (Lamisil). Your child might need to take one of these medications for six weeks or more.
Your doctor might recommend that you also wash your child's hair with a prescription-strength medicated shampoo. This may help remove fungus spores and prevent the spread of the infection to other people or to other areas of your child's scalp or body.