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August 1983

Contraction Pseudotremor of Chronic Denervation

Author Affiliations

From the Departments of Neurology (Drs Riggs and Gutmann) and Pathology (Dr Schochet), West Virginia School of Medicine, Morgantown.

Arch Neurol. 1983;40(8):518-519. doi:10.1001/archneur.1983.04210070058015

• The tremulousness observed with voluntary muscle contraction in patients with chronic denervating illness has long been described but has been given misleading and confusing labels. The phenomenon is generally attributed to the nonsmooth contraction of a muscle populated by motor units decreased in number and enlarged. Contraction pseudotremor of chronic denervation may be a more appropriate label for this useful clinical sign.

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