Tooth-brushing epilepsy: A report of a case with structural and functional imaging and electrophysiology demonstrating a right frontal focus

Terence J. O'Brien, Robert E. Hogan, Leslie Sedal, Vanessa Murrie, Mark J. Cook

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

Patients with reflex epilepsies may provide insights into cerebral pathophysiology. We report a patient with an unusual form of reflex epilepsy in whom seizures are induced by tooth brushing. Magnetic resonance imaging (MRI) demonstrated a right posterior frontal low-grade tumor predominantly involving the precentral gyrus. Video-telemetry demonstrated right-sided epileptiform activity during a typical induced complex partial seizure. An ictal single photon emission computed tomography (SPECT) scan showed an area of hyperfusion that corresponded to the MRI lesion on coregistration with a surface-matching technique. A subsequent coregistered interictal SPECT scan demonstrated hypoperfusion in the same region. Ours is the first report to demonstrate a structural focus in this unusual form of reflex epilepsy. Possible mechanisms to explain the induction of the seizures are discussed.

Original languageEnglish
Pages (from-to)694-697
Number of pages4
JournalEpilepsia
Volume37
Issue number7
DOIs
StatePublished - Aug 16 1996
Externally publishedYes

Keywords

  • Cerebral pathophysiology
  • Complex partial seizures
  • Reflex epilepsy
  • Tooth brushing

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