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 muscl
Idiopathic torsion dystonia and writing tremor within a family
β Scribed by Masaharu Hayashi; Hiroyoshi Koide
- Book ID
- 117545736
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 95 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0387-7604
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Age of onset and severity of idiopathic torsion dystonia (ITD) were studied in 100 British families containing 107 index cases and 79 secondary cases. Analysis of variance of these clinical features did not suggest that ITD is genetically heterogenous, and they were similar in Jewish and non-Jewish
## Abstract Five patients exhibited severe tremor in the upper extremity, primarily when attempting to write or draw. Electromyography was performed to determine the patterns of muscle activity that were responsible for this tremor. Tremor was measured with an accelerometer and with a digitizing ta
A study of 71 patients with idiopathic torsion dystonia (ITD) and 71 matched controls was performed to investigate the range of possible clinical expression of ITD and the role of environmental factors in the development of the disease. A family history of tremor and stuttering were the only factors
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