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Risus sardonicus after thalamic haemorrhage.

Igor Sibon1, Pierre Burbaud1

  • 1Fédération de Neurosciences Cliniques, Centre Hospitalier Universitaire Bordeaux, Bordeaux, France.

Movement Disorders : Official Journal of the Movement Disorder Society
|July 16, 2004
PubMed
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This study details an unusual movement disorder following a stroke, specifically bilateral facial dystonia presenting as a "risus sardonicus" in a patient with thalamic hemorrhage and gaze palsy.

Area of Science:

  • Neurology
  • Neuroscience
  • Movement Disorders

Background:

  • Stroke is a leading cause of neurological deficits.
  • Thalamic hemorrhage can result in diverse clinical presentations.
  • Movement disorders are a recognized complication of cerebrovascular events.

Observation:

  • A 70-year-old male experienced a right thalamic hemorrhage.
  • One week post-stroke, he developed bilateral facial contractions.
  • The patient also presented with vertical gaze palsy.

Findings:

  • Electromyography confirmed bilateral facial dystonia.
  • The combination of dystonia and gaze palsy mimicked "risus sardonicus."
  • This case highlights an uncommon post-stroke sequela.

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Implications:

  • Facial dystonia can occur after thalamic stroke.
  • The "risus sardonicus" presentation suggests specific neuroanatomical connections.
  • Understanding such rare complications aids in diagnosis and management of stroke survivors.