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Published on: September 12, 2020
Posterior Interosseous Neuropathy with Peripheral Dystonia: A Case Report
Gohei Yamada1, Takanari Toyoda1, Eiichi Katada1
1Department of Neurology, Nagoya City University West Medical Center, Aichi, Japan.
Background:
Posterior interosseous neuropathy is an uncommon cause of peripheral dystonia.
Case Report:
A 62-year-old man awakened and noticed right finger drop. A neurological examination revealed posterior interosseous neuropathy with dystonia-like finger movements. Abnormal movements were predominantly observed in the right thumb, ring finger, and little finger. Within 2 weeks, the muscle weakness in the right fingers had completely improved. However, a brief abnormal posture of the right thumb was persistent.
Discussion:
The residual abnormal posture of the right thumb may reflect pre-existing motor control abnormalities, which may have contributed to the onset of posterior interosseous neuropathy-associated peripheral dystonia.
