Increased blink rate in advanced Parkinson's disease: a form of 'off'-period dystonia?

  title={Increased blink rate in advanced Parkinson's disease: a form of 'off'-period dystonia?},
  author={Thomas Edmund Kimber and Philip Douglas Thompson},
  journal={Movement disorders : official journal of the Movement Disorder Society},
  volume={15 5},
Blink rates were measured in 25 patients with fluctuating Parkinson's disease in the "off' and "on" periods. In 17 patients, the "off"-period blink rate was low and increased after administration of levodopa. In the remaining eight patients, the "off"-period blink rate was high and returned to normal levels after levodopa. It is suggested that increased blink rate in the latter group represents a new form of "off"-period dystonia. 
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