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Updated: May 25, 2026

Digital Handwriting Analysis of Characters in Chinese Patients with Mild Cognitive Impairment
Published on: March 11, 2021
[Elderly case of moyamoya disease presenting with hemichorea]
Masato Kinboshi1, Manabu Inoue, Yasuhiro Kojima
1Department of Neurology, Ijinkai Takeda General Hospital.
Abstract:
A 61-year-old Japanese female was admitted with sudden onset of choreic movements of the right extremities. MRI demonstrated no abnormality suggestive of acute infarcts. Cerebral angiography revealed high-grade stenosis of bilateral middle cerebral arteries at the origin and abnormal vascular network compatible with moyamoya disease. Administration of low-dose haloperidol rapidly resolved the choreic movements. SPECT obtained one month after the clinical onset demonstrated increase of the regional cerebral blood flow (rCBF) in the left basal ganglia. Moyamoya disease presenting chorea as its initial symptom was only infrequently reported in the elderly. In the present case, increased rCBF in the basal ganglia and remarkable effect of a dopamine D2 blocker suggest functional abnormality of the corresponding striatum as an underlying cause of hemichorea.
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