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

@article{Claypool1995EpidemiologyAO,
  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 L. Joseph Iii Melton},
  journal={Movement Disorders},
  year={1995},
  volume={10}
}
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… 
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TLDR
Because the cervical dystonia in 38% of patients is not spasmodic, it is proposed that the term “spas modic torticollis” is not a completely appropriate designation for this condition.
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TLDR
Spontaneous remissions in the course of spasmodic torticollis seem to be more frequent in patients with early onset, and they occur usually during the first year, while in the non-remission group, 18 patients were Jewish.
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TLDR
Anticholinergic drugs provided moderate improvement in 33% of patients, but local intramuscular botulinum toxin injections relieved CD, local pain, or both in over 90% of all treated patients.
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TLDR
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TLDR
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TLDR
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Investigation in the Rochester, Minnesota, population over the period 1950–1982 found that Torticollis was the most common focal dystonia; essential blepharospasm, oromandibular dySTONia, spasmodic dysphonia, and writer's cramp were less common and had roughly equal incidence and prevalence rates.
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