The following cases illustrate three different forms of involuntary movements in locomotor ataxia, namely, choreiform movements; irregular, slow contractions of groups of muscles, and a fine rhythmical tremor. I have in a previous paper1 classified the involuntary movements in tabes as follows: 1. Associated movements which may exist also in other forms of organic diseases of the nervous system; 2, sudden twitching of the trunk or extremities, occurring with or without pain and more frequently at night; 3, twitchings in isolated muscles or parts of muscles; 4, fibrillary twitchings; 5, rhythmical tremor resembling paralysis agitans; 6, passive movements, such as those which occur when a patient attempts to sit up in bed without the assistance of the hands or when he coughs; and finally, 7, involuntary movements previously described as athetoid movements. To this classification, I think, may be added choreiform movements. These, however, I believe to be rare.
RHEIN JHW. THREE CASES OF INVOLUNTARY MOVEMENTS IN LOCOMOTOR ATAXIA.. JAMA. 1902;XXXIX(26):1632–1634. doi:10.1001/jama.1902.52480520004001a
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