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Epilepsy and multiple sclerosis.

Charles M Poser1, Vesna V Brinar

  • 1Department of Neurology, Harvard Medical School, and Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA 02215-5400, USA. cposer@caregroup.harvard.edu

Epilepsy & Behavior : E&B
|March 1, 2003
PubMed
Summary
This summary is machine-generated.

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Epileptic seizures occur in 2.3% of multiple sclerosis (MS) patients, a prevalence significantly higher than in the general population. Inflammation and demyelination in the brain are likely causes, though other factors may contribute to seizure occurrence in MS.

Area of Science:

  • Neurology
  • Neuroimmunology
  • Epileptology

Background:

  • Multiple sclerosis (MS) is a chronic autoimmune disease affecting the central nervous system.
  • Epileptic seizures are a known neurological complication in MS patients.
  • The prevalence and underlying mechanisms of seizures in MS require further investigation.

Purpose of the Study:

  • To determine the prevalence of epileptic seizures in adult patients with multiple sclerosis.
  • To explore the potential anatomical basis and etiological factors for seizures in MS.

Main Methods:

  • A comprehensive review of 29 published clinical series involving adult patients with both epilepsy and MS.
  • Analysis of reported prevalence rates and clinical observations.

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Main Results:

  • The prevalence of epileptic seizures in MS patients was found to be 2.3%.
  • This prevalence is approximately three to six times higher than in the general adult population.
  • Inflammation, edema, and demyelination in the cerebral cortex and juxtacortical white matter are probable anatomical correlates for seizures.

Conclusions:

  • Seizures are a significant comorbidity in multiple sclerosis, occurring at a higher rate than in the general population.
  • While MS-related brain lesions are implicated, the exact mechanism and the rarity of seizures despite common lesion occurrence suggest multifactorial causes.
  • Possible explanations include coincidental occurrence, MS triggering latent epilepsy, or direct causation by MS, with the latter considered unusual.