Febrile infection-related epilepsy syndrome: a study of 12 patients

Area of Science:

• Pediatric Neurology
• Epileptology
• Neuroscience

Background:

• Febrile infection-related epilepsy syndrome (FIRES) is a rare and severe neurological disorder.
• It is characterized by refractory epilepsy and often associated with intellectual disability and behavioral disturbances.
• The etiology of FIRES remains largely unknown, classifying it within the group of epileptic encephalopathies.

Purpose of the Study:

• To analyze the electroclinical features of FIRES.
• To investigate neuroimaging findings in FIRES patients.
• To evaluate treatment strategies and outcomes in children diagnosed with FIRES.

Main Methods:

• A retrospective study was conducted on 12 pediatric patients diagnosed with FIRES.
• Data collected included clinical presentation, neuroimaging, treatment interventions, and long-term follow-up.
• Follow-up duration averaged 6.5 years.

Main Results:

• The study included 8 males and 4 females with a mean age of 8.5 years at presentation, experiencing focal status epilepticus after febrile infections.
• Acute treatments involved antiepileptic drugs (AEDs), immunotherapy (10/12), and burst-suppression coma (8/12).
• In the chronic phase, all patients had refractory neocortical epilepsy, intellectual disability, and behavioral issues. Only two cases showed a good long-term outcome.

Conclusions:

• FIRES is a distinct, severe epileptic syndrome with unknown etiology, likely an epileptic encephalopathy.
• Immunoglobulin (IVIG) and ketogenic diet show promise as potentially effective treatments for FIRES.
• Despite aggressive treatments, long-term outcomes for FIRES patients remain challenging, highlighting the need for further research.