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2015•Epilepsy & Behavior Case ReportsOpen access

EEG–EMG polygraphic study of dystonia and myoclonus in a case of Creutzfeldt–Jakob disease

Takao Hashimoto, Teruaki Iwahashi, Wataru Ishii, Kanji Yamamoto, Shu‐ichi Ikeda

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Abstract

We report on a patient with sporadic Creutzfeldt-Jakob disease (CJD) who showed dystonia, periodic myoclonus, and periodic sharp wave complexes (PSWCs) on EEG. The EEG-EMG polygraphic study revealed that dystonia appeared without relation to periodic myoclonus and PSWCs and that dystonia EMGs were strongly suppressed after periodic myoclonus EMGs. These findings suggest that dystonia has a pathogenesis different from that of periodic myoclonus and PSWCs, but dystonia and periodic myoclonus may be generated through the sensorimotor cortex in CJD.

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What this paper is about

We report on a patient with sporadic Creutzfeldt-Jakob disease (CJD) who showed dystonia, periodic myoclonus, and periodic sharp wave complexes (PSWCs) on EEG. The EEG-EMG polygraphic study revealed that dystonia appeared without relation to periodic myoclonus and PSWCs and that dystonia EMGs were strongly suppressed after periodic myoclonus EMGs. These findings suggest that dystonia has a pathogenesis different from that of periodic myoclonus and PSWCs, but dystonia and periodic myoclonus may be generated through the sensorimotor cortex in CJD.

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Available abstract

We report on a patient with sporadic Creutzfeldt-Jakob disease (CJD) who showed dystonia, periodic myoclonus, and periodic sharp wave complexes (PSWCs) on EEG. The EEG-EMG polygraphic study revealed that dystonia appeared without relation to periodic myoclonus and PSWCs and that dystonia EMGs were strongly suppressed after periodic myoclonus EMGs. These findings suggest that dystonia has a pathogenesis different from that of periodic myoclonus and PSWCs, but dystonia and periodic myoclonus may be generated through the sensorimotor cortex in CJD.

Key concepts: Myoclonus, Dystonia, Electroencephalography, Medicine, Physical medicine and rehabilitation, Disease, Anesthesia, Audiology

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EEG–EMG polygraphic study of dystonia and myoclonus in a case of Creutzfeldt–Jakob disease — Research Paper | ScholarLens