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KMID : 0359719960140040940
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Journal of the Korean Neurological Association
1996 Volume.14 No. 4 p.940 ~ p.950
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Neurological Aspects of the Patient with Spasmodic Dysphonia
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Abstract
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spasmodic dysphonia is a from of focal dystonia affecting laryngeal muscles. There have been a few reports on the neurological aspects of the patient with spasmodic dysphonia. No data on the clinical courses and possible causative neurological
diseases
have been reported. We analysed 44 patients with spasmodic dysphonia, using a check-list of clinical symptoms and laboratory tests in a prospective manner. Forty one patients had adductor type of spasmodic dysphonia and three patients had
abductor
type.
Five different clinical courses have been identified ; about half of the patients showed relentless progress of symptoms for many years (range 1-26 years ; mean 9 8 years). Magnetic resonance imaging study of the brain showed abnormalities in
three
patients (2 had a focal lesion in the basal ganglia and 1 had multiple cerebral infarctions). One showed acanthocytosis on electron-microscopic examination of the peripheral blood smear. Navicular tremor, low facial dyskinesia, and development of
other
involuntary movement at the time of onset of spasmodic dysphonia may be clues suggestive of symptomatic form of spasmodic dysphonia.
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KEYWORD
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