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Tremor and idiopathic dystonia
Author(s) -
Jedynak C. P.,
Bonnet A. M.,
Agid Y.
Publication year - 1991
Publication title -
movement disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.352
H-Index - 198
eISSN - 1531-8257
pISSN - 0885-3185
DOI - 10.1002/mds.870060307
Subject(s) - dystonia , myoclonus , essential tremor , neurological disorder , physical medicine and rehabilitation , electromyography , medicine , movement disorders , psychology , neuroscience , central nervous system disease , pathology , disease
The clinical and electromyographic characteristics of tremor were studied in 45 patients presenting with various forms of idiopathic dystonia. Dystonic tremor was shown to be postural, localized, and irregular in amplitude and periodicity, absent during muscle relaxation, exacerbated by smooth muscle contraction, and associated frequently with myoclonus. Although it resembles essential tremor, dystonic tremor seems to be a distinct entity: it is more irregular witha broader range of frequecies; it is asymmetric and remains localized; myoclonus is sometimes associated. This type of tremor is most often seen in the presence of dystonia, but may be observed without evident dystonic symptoms.