Febrile Convulsions


Cork Emergency Departments


Watching your child have a febrile convulsion (fit) can be a very frightening experience. Many parents often think that their child is dead or dying when they first see a febrile convulsion. However, febrile convulsions are not as serious as they look. This sheet explains some facts about them.

What is a febrile convulsion ?

It is a fit caused by a high temperature in a child usually aged between 6 months and 6 years old. A convulsion is an attack in which a person becomes unconscious and usually stiff with jerking of the arms and legs. It is caused by a storm of electrical activity within the brain. The words convulsion, fit, seizure; all mean the same thing. Febrile convulsions are very common. At least 1 child in 30 will have one or more.

What should I do if my child has another convulsion?

Priny version

Is it epilepsy?

No. Epilepsy refers to fits without a fever, usually in older children or adults. Convulsions rarely lead to epilepsy. 99 out of 100 children with febrile convulsions never have further convulsions after they reach school age.

Do febrile convulsions cause permanent brain damage?

Almost never. In a study of nearly 2000 children, who were examined very carefully for evidence of permanent brain damage, none was found. It is thought that, very rarely, children who have a convulsion which lasts for half an hour or more, some permanent damage may result.

What brings on febrile convulsions?

Any illness which causes a high temperature (usually a cold or other virus infection). The illness that causes the high temperature is often mild apart from its effect in causing a fever and therefore increasing the risk of a fit. Treating the temperature is important. Of 10 children that have a febrile convulsion about 3 or 4 will have more than 1 convulsion. The risk of having another convulsion drops rapidly after the age of 3 years.

Does my child suffer discomfort or pain during a convulsion?

Priny version

No. The child is unconscious and unaware of what is happening. They can be sleepy or slightly confused following the fit. The convulsion is always much more disturbing for the parents than it is for the child.

What should I do if my child has a fever?


If you are concerned, please contact the Emergency Department you first attended: MUH (021) 4271971 M-UCC at SMHC (St. Mary’s Health Campus) (021) 4926900 CUH (021) 4920200 LIU Mallow General Hospital (022) 58506 Bantry General Hospital (027) 52900

Content by Dr Íomhar O' Sullivan, 10/03/2004. Reviewed by Dr ÍOS 21/02/2005, 28/06/2006, 08/04/2007. Next review 08/04/2008Print version.