Can seizures due to fever in infants lead to long-term complications?

Fever generally refers to an elevated body temperature. Whether a baby developing seizures during fever will have aftereffects usually depends on the specific underlying cause.

1. No aftereffects

If the seizure is caused by febrile convulsions, it typically occurs suddenly when the baby's temperature begins to rise at the onset of illness. The seizure usually lasts no more than 15 minutes—possibly just a few seconds, tens of seconds, or several minutes. After the seizure, the child generally wakes up in good condition without signs of neurological abnormalities, and typically does not develop any long-term complications.

2. Possible aftereffects

If the fever and seizure are due to intracranial infection, because of the infant’s immature physical development and incomplete thermoregulatory center, symptoms such as irritability or excessive drowsiness may occur. Neurological positive signs are commonly present, and although most recover with prompt treatment, a minority may experience long-term complications.

It is recommended to seek timely medical attention when these symptoms occur, follow the doctor’s instructions for treatment, and prevent symptom progression that could affect health.