Febrile Seizures in Children: What Every Parent Must Know When Fever Causes Fits

A 2-year-old child suddenly goes stiff, their eyes roll back, and their arms and legs begin jerking rhythmically. The fever has been present for a few hours. The parents are terrified, convinced their child is dying. What they are witnessing is a febrile seizure — the most common seizure type in young children — and while it looks catastrophic, in the vast majority of cases it is benign and self-limiting.

What Is a Febrile Seizure?

A febrile seizure is a seizure triggered by fever (temperature typically above 38.5°C) in a child between 6 months and 5 years of age, with no underlying neurological abnormality, no intracranial infection, and no metabolic cause. They are not caused by the fever "cooking the brain" — they are caused by the rapid rise in temperature activating seizure-prone brain circuits in susceptible young children. The immature developing brain has a lower seizure threshold than the adult brain.

Types and Prognosis

Simple febrile seizures (the vast majority): Generalised (whole body), last less than 15 minutes, occur only once in a 24-hour period during a single fever illness. Prognosis is excellent. No increased risk of epilepsy, no brain damage, no cognitive impairment. Approximately 30–40% of children who have one simple febrile seizure will have another — but most outgrow them by age 5–6.

Complex febrile seizures: Focal (one-sided), last more than 15 minutes, or occur more than once in 24 hours. These require more thorough evaluation and carry a slightly higher risk of later epilepsy — though still less than 10% in most studies.

What to Do During the Seizure

1. Stay calm and time the seizure
2. Place the child on their side (recovery position) on a safe, flat surface — prevents aspiration of saliva
3. Do not put anything in the mouth
4. Do not restrain
5. Most stop within 1–3 minutes on their own

Call 108 or go to hospital if: The seizure lasts more than 5 minutes; the child does not fully recover within 30 minutes; there are features of complex febrile seizure; it is the child's first ever seizure; the child is under 6 months old; you suspect meningitis (stiff neck, rash, extreme lethargy).

Does a Febrile Seizure Mean My Child Has Epilepsy?

No. Febrile seizures are not epilepsy. Epilepsy is diagnosed when a person has unprovoked seizures (seizures without a trigger like fever). A febrile seizure is a provoked seizure — the trigger is the fever. Children with febrile seizures do not require long-term anti-epileptic medication in most cases.

For febrile seizure evaluation, EEG, and paediatric neurology: Sri Anand CNC, Chanda Nagar, Hyderabad. Call +91 90633 66983.