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Epileptic palatal myoclonus

W O Tatum1, M R Sperling, J G Jacobstein

  • 1Department of Neurology, Graduate Hospital, Philadelphia, PA 19146.

Neurology
|August 1, 1991
PubMed

Insights

Palatal myoclonus, typically from brainstem issues, can originate from the cerebral cortex. This case study details a patient experiencing focal cortical palatal myoclonus alongside continuous partial epilepsy.

Area of Science:

  • Neurology
  • Neuroscience
  • Epileptology

Background:

  • Palatal myoclonus (PM) is a condition characterized by rhythmic contractions of the palate.
  • It is most commonly associated with lesions in the brainstem, particularly the olivary nucleus.

Observation:

  • This report details a rare case of PM originating from the focal cerebral cortex.
  • The patient presented with epilepsia partialis continua, a form of persistent focal epilepsy.
  • The palatal myoclonus manifested intermittently, sometimes in isolation and other times with associated unilateral facial, neck, and arm myoclonus.

Findings:

  • The study documents a unique instance of focal cortical origin for palatal myoclonus.
  • Electroencephalography (EEG) and Single-Photon Emission Computed Tomography (SPECT) were utilized to record and analyze the myoclonic events and their cortical correlates.
  • This provides evidence linking cortical dysfunction to palatal myoclonus.

Implications:

  • This case expands the known etiologies of palatal myoclonus beyond the brainstem.
  • It highlights the potential for cortical lesions to cause this condition, challenging traditional understanding.
  • Further research into cortical networks involved in PM may reveal new diagnostic and therapeutic targets for movement disorders and epilepsy.

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