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Seizure recurrence risk following a first seizure in neurologically normal children

Todd M Arthur1, Ton J deGrauw, Cynthia S Johnson

  • 1Division of Neurology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.

Epilepsia
|January 22, 2009
PubMed

Insights

Seizure recurrence is common in children after a single unprovoked seizure. While electroencephalography (EEG) is not predictive, magnetic resonance imaging (MRI) may help identify children at higher risk for recurrence.

Area of Science:

  • Pediatric Neurology
  • Epilepsy Research

Background:

  • Recurrence risk after a first afebrile, unprovoked seizure in children is a critical clinical question.
  • Understanding predictors of seizure recurrence is essential for guiding treatment decisions.

Purpose of the Study:

  • To determine seizure recurrence rates in children experiencing a single seizure.
  • To evaluate the predictive utility of electroencephalography (EEG) and magnetic resonance imaging (MRI) for seizure recurrence.

Main Methods:

  • A prospective study followed 150 children (6-14 years) with a first afebrile, unprovoked seizure.
  • Participants had normal neurological exams and underwent EEG and brain MRI.
  • Follow-up extended for a minimum of 27 months.

Main Results:

  • The overall seizure recurrence rate was 66.4%.
  • Abnormal EEG findings did not correlate with seizure recurrence at any follow-up interval (9, 18, or 27 months).
  • Significant MRI abnormalities (16.0% of cases) were associated with increased recurrence risk at 9 months but not later.

Conclusions:

  • Electroencephalography (EEG) has limited value in predicting seizure recurrence after a single childhood seizure.
  • The high prevalence of MRI abnormalities suggests its potential role as a routine diagnostic tool for evaluating childhood epilepsy.
Abstract

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