Polymyoclonus aggravated by neck flexion as the isolated presenting symptom of Hirayama disease: case report.

ABSTRACT:

Background

We report a rare case of an 18-year-old male with unilateral hand tremor who was finally diagnosed with Hirayama disease (HD).

Case presentation

An 18-year-old male presented with unilateral polymyoclonus that aggravated with neck flexion. The patient did not complain of muscle weakness or muscle atrophy. The needle electromyography showed giant motor unit potentials in right cervical 7 and 8 innervated muscles. The cervical magnetic resonance imaging on supine and flexion state showed prominent forward effacement of posterior dural sac that was compatible with HD.

Conclusions

HD usually presents with unilateral distal hand weakness, muscle atrophy and tremor. Although it is a benign and self-limiting disease, early diagnosis may lead to less clinical deter

SUBMITTER: Kim JY 

PROVIDER: S-EPMC7460763 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature