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[Blepharospasm caused by bilateral paramedian thalamic infarction]
1Neurology Section, King Fahd National Guard Hospital Riyad, Arabie Saoudite.
Revue Neurologique
|February 1, 1997
Summary
A stroke patient developed severe blepharospasm, a rare symptom linked to thalamic paramedian infarcts. Lesions in specific thalamic nuclei may cause this condition.
Area of Science:
- Neurology
- Neuroscience
- Clinical Medicine
Background:
- Thalamic infarcts can cause diverse neurological deficits.
- Blepharospasm is infrequently associated with central nervous system lesions.
Observation:
- A 67-year-old woman experienced sequential infarcts in the middle cerebral artery and bilateral thalamic paramedian territories.
- The patient presented with hemiparesis, speech disorders, stupor, oppositional behavior, and severe blepharospasm with ophthalmoplegia.
Findings:
- The left thalamic infarct correlated with right hemiparesis and subcortical speech deficits.
- The subsequent right thalamic infarct coincided with stupor, left hemiparesis, and behavioral changes.
- Blepharospasm, convergence paralysis, and vertical gaze palsy were noted, with literature suggesting intralaminar and dorsomedian nuclei involvement.
Implications:
- This case highlights the rare association between thalamic paramedian infarcts and severe blepharospasm.
- Findings suggest specific thalamic nuclei (intralaminar, dorsomedian) are critical in blepharospasm pathogenesis.
- Further research into thalamic lesions and associated movement disorders is warranted.