At what ages do febrile seizures occur most often?

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Infographic showing estimated lives saved by childhood vaccinations worldwide from 1974 to 2024, with syringe-shaped bars for each disease. Measles tops the list at 93.71 million lives saved, followed by tetanus, whooping cough, and others, for a total of 153.84 million lives saved. — childhood disease and disorder Vaccines and the estimates of lives saved over the period 1974–2024.

Febrile seizures, which are triggered by high fever, occur most frequently in children between six months and five years of age. Some clinical sources specifically note that these seizures are most common between six months and four years of age.12

These events are a type of provoked seizure and are generally associated with a high familial incidence, with most children experiencing spontaneous recovery.12