What is the most common age for febrile seizures?

A febrile seizure is a seizure associated with a raised temperature in a child who does not have another identified cause for the seizure. It can happen when a fever begins or rises quickly, rather than only after a child has been unwell for a long time. Viral illnesses, including [Influenza](/conditions/influenza/), can cause fever. A seizure can look frightening, but the child should be protected from injury while it passes.

Place the child on the floor or a safe surface on their side, clear nearby objects and loosen tight clothing. Note when the movements start and stop. Do not restrain the child, put anything in their mouth, or give food, drink or medicine during the event. Once awake, offer comfort and seek advice about the cause of the [Fever](/symptoms/fever/). A [Child Health Consultation](/treatments/consultations-and-assessment/child-health-consultation/) can review the episode.

Call emergency services if the seizure lasts more than five minutes, breathing is difficult, the child does not wake normally, the movements affect only one side, another seizure follows soon after, or the child appears seriously ill. Medical assessment is also needed for a first seizure or a fever in a very young infant.

Ask what may have caused the fever, whether the episode fits a febrile seizure, how to manage future fevers, and which signs should prompt emergency care.