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This reportpresents a case of propriospinal myoclonus PSM in a previously fit and wellfemale patient who presented with truncal jerking movements when relaxed. Propriospinalmyoclonus is a rare condition, of which 80% of the aetiology is idiopathic. Itis characterised by involuntary jerking movements of the trunk due to spreadingactivity via intrinsic propriospinal pathways along the spinal cord.Polymyography is mandatory in the diagnosis of priopriospinal myoclonus howeverin discerning the differential diagnoses it is inferior to magnetic resonancediffusion tensor imaging. The management of propriospinal myoclonus isdependent on aetiology. Clonazepam has been shown to be effective in thetreatment of idiopathic PSM for symptomatic relief.


Myoclonus, PSM, Polymyography

Cite this paper

Smith, C. and Ramtahal, J. 2014 Case Report: Propriospinal Myoclonus. Case Reports in Clinical Medicine, 3, 364-366. doi: 10.4236-crcm.2014.36081.

Autor: Catherine Smith, Jason Ramtahal



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