A child who has a febrile seizure usually doesn't need to be hospitalized, says Dr. Scott. However, if the seizure is prolonged or is accompanied by a serious infection—or if the source of the infection cannot be determined—a doctor may recommend that the child be hospitalized for observation. Tests can be done to determine if the seizures are caused by something other than the fever.
Certain children who have febrile seizures may have an increased risk of developing epilepsy, according to NINDS. These include children who have febrile seizures that are lengthy or seizures that recur within 24 hours and children who have cerebral palsy, delayed development, or other neurological abnormalities.
Overall, it is important for parents to remember that the vast majority of fevers and febrile seizures are harmless. There is no evidence that febrile seizures cause brain damage, and high fevers are an indication that the child's body is working to fight off an infection.