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KMID : 1044320220240020073
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Annals of Clinical Neurophysiology
2022 Volume.24 No. 2 p.73 ~ p.78
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Abnormal spontaneous electromyographic activity in myasthenia gravis causing a diagnostic confusion: a case report and literature review
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Kim So-Hyeon
Kang Min-Sung
Park Jin-Sung
Seok Hung-Youl
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Abstract
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Some cases of myasthenia gravis (MG) with abnormal spontaneous activity (ASA) in needle electromyography (EMG) have been reported, but the associated clinical characteristics remain to be fully elucidated. We report the case of a 36-year-old male with MG in whom ASA was observed. This study highlights that ASA may appear in needle EMG in patients with severe MG who predominantly have bulbar and/or respiratory involvement. Care is needed because this often accompanies myopathic features and can be misdiagnosed as myopathy.
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KEYWORD
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Myasthenia gravis, Electromyography, Spontaneous activity
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