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Is Concussion a Risk Factor for Epilepsy?

Richard Wennberg1, Carmen Hiploylee1, Peter Tai2

  • 11Canadian Concussion Centre,University Health Network,Toronto Western Hospital,University of Toronto,Toronto,Ontario,Canada.

The Canadian Journal of Neurological Sciences. Le Journal Canadien Des Sciences Neurologiques
|March 21, 2018
PubMed
Summary
This summary is machine-generated.

Concussion, or mild traumatic brain injury (mTBI), does not increase epilepsy risk. This study found no higher incidence of epilepsy in post-concussion patients, suggesting mTBI is not a significant epilepsy risk factor.

Keywords:
ConvulsionIncidenceMild traumatic brain injury (mTBI)PrevalenceSeizure

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Area of Science:

  • Neurology
  • Neuroscience
  • Traumatology

Background:

  • Epidemiologic studies suggest concussion (mTBI) may increase post-traumatic epilepsy risk.
  • Previous research indicates a twofold or greater relative risk.
  • This study aimed to validate these findings in a strictly defined concussion cohort.

Purpose of the Study:

  • To assess the clinical validity of the association between concussion and epilepsy.
  • To analyze epilepsy incidence in a large cohort of strictly defined post-concussion patients.

Main Methods:

  • Retrospective cohort study of 330 post-concussion patients.
  • Strict inclusion/exclusion criteria, including normal CT/MRI and GCS > 13.
  • Epilepsy incidence was the primary outcome measure.

Main Results:

  • No patients met criteria for definite epilepsy diagnosis.
  • Eight patients had seizure-like events, but none were epileptic.
  • Epilepsy incidence in the cohort did not differ from the general population (p=0.49).

Conclusions:

  • Concussion/mTBI is not a significant risk factor for epilepsy in the first 5-10 years post-injury.
  • Post-traumatic epilepsy should not be presumed in patients with a concussion history.
  • Further research may be needed for long-term outcomes.