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Related Experiment Videos

Epileptic seizures progressing into nonepileptic conversion seizures

O Devinsky1, E Gordon

  • 1Department of Neurology, New York University Medical Center, New York, USA.

Neurology
|November 18, 1998
PubMed
Summary
This summary is machine-generated.

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Epileptic and nonepileptic seizures can occur together. In some patients with partial seizures, epileptic activity may trigger nonepileptic events, suggesting a potential pathophysiological link.

Area of Science:

  • Neurology
  • Clinical Neurophysiology

Background:

  • Epileptic and nonepileptic seizures can coexist in patients but are typically distinct.
  • Historical suggestions of a link exist, but concurrent events are poorly documented.

Observation:

  • A review of video-electroencephalogram (EEG) documented nonepileptic seizures identified four patients with temporally associated epileptic seizures.
  • In one case, a nonepileptic event followed an absence seizure; in three others, partial seizures preceded nonepileptic events.

Findings:

  • Epileptic and nonepileptic seizures can be temporally related.
  • Partial seizures originating from right frontotemporal regions were associated with subsequent nonepileptic seizures in three patients.

Implications:

Related Experiment Videos

  • A pathophysiological relationship may exist between partial seizures and nonepileptic (conversion) symptoms.
  • Ictal activation or disinhibition of emotional or impulse control pathways could contribute to nonepileptic events.