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Related Experiment Videos

Persistent hemichorea associated with thyrotoxicosis.

M Baba1, A Terada, R Hishida

  • 1Department of Neurology, Hirosaki University School of Medicine, Japan.

Internal Medicine (Tokyo, Japan)
|September 1, 1992
PubMed
Summary
This summary is machine-generated.

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This study reports unilateral chorea in a thyrotoxicosis patient. Treating the thyroid condition resolved the involuntary movements, suggesting a link between dopamine receptor sensitivity and thyrotoxic chorea.

Area of Science:

  • Neurology
  • Endocrinology

Background:

  • Thyrotoxicosis, a condition of excess thyroid hormones, can present with various neurological symptoms.
  • Chorea, characterized by involuntary, irregular, and purposeless movements, is a rare manifestation of thyrotoxicosis.

Observation:

  • A 23-year-old female with severe thyrotoxicosis developed acute, unilateral chorea affecting her left extremities.
  • Cerebral imaging (CT, MRI) and perfusion studies (SPECT) showed no structural or functional abnormalities.
  • Dopamine antagonist therapy provided only partial, temporary relief of the choreiform movements.

Findings:

  • The chorea persisted for two months despite initial treatment.
  • Complete resolution of choreic movements occurred only after successful management of thyrotoxicosis.

Related Experiment Videos

  • This suggests a direct correlation between the thyroid state and the neurological presentation.

    • Implications:

    • The findings suggest that increased dopamine receptor sensitivity may underlie thyrotoxic chorea.
    • This case highlights the importance of considering and treating underlying endocrine disorders in patients presenting with unexplained movement disorders.
    • Further research into the neurochemical mechanisms linking thyrotoxicosis and chorea is warranted.