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Lesion localization in developing poststroke hand dystonia

S Karşidag1, F Ozer, A Sen

  • 1Department of Neurology, Bakirköy State Hospital for Psychiatric and Neurological Diseases, Istanbul, Turkey.

European Neurology
|August 7, 1998
PubMed
Summary
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Stroke can cause hand dystonia, a movement disorder. Lesions in specific brain areas, particularly the thalamus, were linked to this condition in nine patients.

Area of Science:

  • Neurology
  • Neuroscience
  • Movement Disorders

Background:

  • Hand dystonia is a debilitating focal dystonia.
  • Stroke is a potential cause of secondary dystonia.

Purpose of the Study:

  • To investigate the neuroanatomical correlates of hand dystonia following stroke.
  • To characterize associated neurological symptoms and the temporal relationship between stroke and dystonia onset.

Main Methods:

  • Case series of 9 patients with post-stroke hand dystonia.
  • Lesion localization using computerized tomography (CT) or magnetic resonance imaging (MRI).
  • Clinical assessment of associated neurological signs and symptoms.

Main Results:

  • Thalamic lesions were identified in all 9 patients, with specific locations including parietothalamic, posterolateral thalamic, dorsal thalamic, and medial thalamic.

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  • Associated symptoms included hemiballism, hemichorea, action tremor, anxiety, and pain.
  • The interval from stroke onset to dystonia manifestation ranged from 1 month to 2 years.

    • Conclusions:

    • The thalamus is a critical area for the development of hand dystonia after stroke.
    • Post-stroke hand dystonia can present with a variety of associated neurological and psychological symptoms.
    • Understanding lesion location aids in predicting and managing post-stroke movement disorders.