Epidemiology and outcome of cervical dystonia (spasmodic torticollis) in Rochester, Minnesota.

  title={Epidemiology and outcome of cervical dystonia (spasmodic torticollis) in Rochester, Minnesota.},
  author={David W Claypool and Drake D. Duane and Duane M. Ilstrup and Lee Joseph Melton},
  journal={Movement disorders : official journal of the Movement Disorder Society},
  volume={10 5},
The natural history of cervical dystonia (spasmodic torticollis) was investigated in a population-based study in Rochester, Minnesota. Eleven new cases were identified with onset during the 20-year period 1960-1979. The overall incidence rate was 1.2 per 100,000 person-years (95% confidence interval 0.5-1.9) with a female:male ratio of age-adjusted incidence rates of 3.6:1. A unitary etiology was not apparent: injury antedated onset in four of the 11 patients, whereas six had documented thyroid… CONTINUE READING
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