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Children often present with infantile spasms after herpetic encephalitis

Gemma Aznar Laín1, Georges Dellatolas, Monika Eisermann

  • 1Pediatric Neurology, Pediatric Department, Del Mar Hospital, Autonomous University of Barcelona, Barcelona, Spain. gaznar@parcdesalutmar.cat

Epilepsia
|July 3, 2013
PubMed

Insights

Early herpetic encephalitis in infants increases the risk of developing epilepsy, particularly infantile spasms. Younger age at epilepsy onset and specific brain lesions are key risk factors.

Area of Science:

  • Neurology
  • Pediatric Epilepsy
  • Infectious Disease Neurology

Background:

  • Herpetic encephalitis can lead to long-term neurological sequelae in children.
  • Epilepsy is a known complication of central nervous system infections.
  • Infantile spasms are a severe epilepsy syndrome with significant developmental impact.

Purpose of the Study:

  • To identify epilepsy types following herpetic encephalitis.
  • To determine risk factors for developing infantile spasms after herpetic encephalitis.

Main Methods:

  • Retrospective analysis of 22 pediatric patients with epilepsy post-herpetic encephalitis.
  • Video-electroencephalography (EEG) for seizure semiology.
  • Neuroradiology and epilepsy follow-up data analysis.

Main Results:

  • Fourteen patients developed pharmacoresistant spasms; eight developed focal epilepsy.
  • Spasm development was associated with earlier herpetic encephalitis (mean 10.6 months) and younger age at epilepsy onset (mean 22.1 months).
  • No single brain lesion was solely linked to infantile spasms, but insula, hippocampus, and temporal pole involvement were noted.

Conclusions:

  • Early herpetic encephalitis (around 10 months) is a risk factor for infantile spasms.
  • Younger age at epilepsy onset (around 22 months) is a significant risk factor.
  • Cerebral lesions in the insula, hippocampus, and temporal pole are associated with spasm development.
Abstract

Keywords:
Brain maturationHerpetic encephalitisInfantile spasmsInsula

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