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Negative myoclonus after bilateral thalamic infarct
Authors: Ștefania Diaconu, Alina Fărcaș, Mihaela Suciu, Alexandra Urdea, Monica Moarcăș, Radu Mircea, Cristian Falup-Pecurariu
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Myoclonus is a rapid, involuntary, shock-like movement, rhythmical or irregular. From an
etiological point of view, myoclonus can be physiological, essential, epileptic, symptomatic (secondary) or
psychogenic. Symptomatic (secondary) myoclonus can have a wide range of causes such as degenerative
disease, basal ganglia lesions, focal cerebral lessions (vascular, tumoral, inflammatory or traumatic), hypoxic
encephalopaties, infectious, toxic, autoimmune, paraneoplastic or metabolic. Myoclonus can be either
positive if it is the result of a sudden muscle contraction or negative when the ongoing activity of a muscle or
group of muscles ceases abruptly.
The aim of the present article is to present a case of negative myoclonus following a bilateral
thalamic ischemic stroke with subsequent hemorrhagic transformation due to an atherothrombotic occlusion
of Percheron artery.