What should you know about types of febrile convulsion?

A simple febrile convulsion is generally a single, brief seizure affecting the whole body during an illness with fever. A complex pattern may last longer, happen more than once during the same illness, or affect one part of the body more than another. The appearance can be frightening, but the pattern and the child’s recovery help clinicians decide what assessment is needed.

Fever can accompany many infections. A convulsion can also have other causes, including low blood sugar, alcohol-related withdrawal in an older person, or meningitis. A first seizure with fever should be medically assessed, because the fever’s cause matters as well as the movements.

Place the child on a safe surface, turn them onto their side when possible, move hard or sharp objects away and loosen tight clothing around the neck. Observe the start time and what the movements look like. Do not restrain the child, put anything in the mouth, give food or drink, or try to cool them with cold water. Stay with them and follow any seizure plan provided by their clinician.

Call emergency services if the seizure continues, repeats without full recovery, affects breathing, follows an injury, or the child does not wake normally. Urgent assessment is also needed with a stiff neck, severe headache, unusual rash, marked drowsiness, persistent vomiting, or concern about meningitis. A first febrile convulsion needs prompt medical review even if the child appears well afterwards.

Ask what pattern the event suggests, how the fever’s source will be checked, whether a rescue medicine or written seizure plan is needed, and what signs should prompt emergency care if it happens again.