
Febrile convulsions
Hukihuki karawaka teitei
A febrile convulsion (or febrile seizure) is when a tamaiti (child) has a seizure (also called convulsion or fit) because they have a fever. This is usually when their temperature is 38°C or higher.
Febrile convulsions mostly happen in tamariki (children) aged from 6 month to 5 years. They are fairly common, in most cases are not serious and seldom causes any long-term problems.
Symptoms of a febrile convulsion
A febrile convulsion usually lasts between 1 and 5 minutes.
During the convulsion, your tamaiti may have some of the following symptoms:
- their body becomes stiff
- they lose consciousness
- their arms, legs and body twitch
- they wee or poo themselves and bite their tongue
- their eyes roll back
- they foam at the mouth
- they vomit.
Helping your child with a febrile convulsion
Dial 111 and ask for an ambulance if:
- the seizure lasts longer than 5 minutes
- your tamaiti has trouble breathing
- your tamaiti looks very unwell
- your tamaiti does not wake up and respond after the seizure.
Stay calm and put your tamaiti on their side in the recovery position (see below) while waiting for help to arrive.
If your tamaiti is unconscious and stops breathing at any time, start CPR. See CPR for adults and children and CPR for babies (0 to 1 year).
If your tamaiti is having a febrile convulsion:
- place them in the recovery position – lay them on their side on a soft surface with their face turned to one side (see the image)
- remove any sharp or hard objects from around them
- loosen their clothing, particularly around their neck
- stay with them – make a note of when the seizure started so you can keep track of how long it lasts
- stay calm.
Do not:
- put anything in their mouth
- hold them down or restrain them.
After the seizure:
- comfort and reassure them
- stay with them until they are fully awake and have recovered.
Getting help for febrile convulsions
Even if they recover quickly, take your tamaiti to your general practice team. They may need tests or treatment for the underlying infection.
HealthInfo recommends the following pages
Written by HealthInfo clinical advisers. Last reviewed December 2024.
Sources
The information in this section comes from the following sources, some of which may be clinically complex or not available to the general public
KidsHealth – Febrile seizures. Retrieved October 2021.
Image and embedded video sources
Illustration of how to put someone in the recovery position from Shutterstock (image ID 181658390). July 2016.
Image of a child lying down and being given a glass of water from Shutterstock (image ID 534144853). April 2020.
Image of child lying on the floor from Shutterstock (image ID 1331880323). November 2021.
Image of a child sleeping with a parent checking their temperature from Shutterstock (image ID 320993354). October 2022.
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