Neurologists have been making fairly definite classifications of cases into well-known clinical syndromes, but analysis of the host of dyskinetic disorders which accompanied the acute forms of epidemic encephalitis or remained as chronic sequelae has shown such unusual combinations and fragmentation of the involuntary movements as to render classification almost impossible. We would draw attention to (1) the various combinations of abnormal involuntary movements in the same patient; (2) manifestations of fragments of dyskinetic syndromes in others; (3) the differences of the same type of involuntary movements in different patients and in the same patient at different times; (4) the presence of phenomena hitherto unassociated with the more or less well defined syndromes, and (5) the occurrence in definitely organic disease of movements which, because of their pattern-like character, have hitherto been regarded as psychogenic in nature.
In view of Walshe's recent dogmatic limitation of the phenomena of decerebrate rigidity
BROCK S, WECHSLER IS. INVOLUNTARY MOVEMENTS: THEIR UNUSUAL ASSOCIATION AND RELATION TO THE PHENOMENA OF DECEREBRATE RIGIDITY. Arch NeurPsych. 1924;11(6):698–706. doi:10.1001/archneurpsyc.1924.02190360086007
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