Orthostatic myoclonus (OM)
Written and reviewed by Dr Ibrahim Imam, Consultant Neurologist. Last reviewed .
Orthostatic myoclonus (OM). Atypical parkinsonism, Alzheimer's disease (AD), Normal pressure hydrocephalus (NPH). Fully referenced neurology checklist.
Causes
- Atypical parkinsonism
- Alzheimer's disease (AD)
- Normal pressure hydrocephalus (NPH)
- Cerebral amyloid angiopathy (CAA)
- Chronic renal failure
- Autoimmune with Caspr2 antibodies
Clinical features
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Differential diagnosis
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Electromyography (EMG)
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References
- Erro R, Bhatia KP, Cordivari C. Shaking on standing: a critical review. Mov Disord Clin Pract 2014; 1:173-179.
- Gövert F, Witt K, Erro R, et al. Orthostatic myoclonus associated with Caspr2 antibodies. Neurology 2016; 86:1353-1355.
- van Gerpen JA. A retrospective study of the clinical and electrophysiological characteristics of 32 patients with orthostatic myoclonus. Parkinsonism Relat Disord 2014; 20:889-893.
- Glass GA, Ahlskog JE, Matsumoto JY. Orthostatic myoclonus: a contributor to gait decline in selected elderly. Neurology 2007; 68:1826-1830.
- Gasca-Salas C, Arcocha J, Artieda J, Pastor P. Orthostatic myoclonus: an underrecognized cause of unsteadiness? Parkinsonism Relat Disord 2013; 19:1013-1017.
