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Published on: July 16, 2014
Pallidal Deep Brain Stimulation in Dystonia: Investigating Differential Response by Dystonia Distribution
Sushuma Yarlagadda1,2, Margi Patel1,3, Sheila Rajagopalan2
1Emory University Department of Neurology, Atlanta, GA, USA.
Tremor and Other Hyperkinetic Movements (New York, N.Y.)
|June 29, 2026
Summary
Deep brain stimulation (DBS) for dystonia shows varied effectiveness by body region, with the neck and proximal arms benefiting most. The Global Dystonia Rating Scale (GDRS) is more sensitive than the Burke-Fahn-Marsden Rating Scale (BFMRS-M) for assessing treatment response.
Area of Science:
- Neurology
- Neurosurgery
Background:
- Dystonia involves involuntary movements and postures.
- Deep brain stimulation (DBS) is an effective treatment for dystonia.
- DBS response varies by body region, but literature is conflicting.
Purpose of the Study:
- To analyze dystonia response to DBS based on body distribution.
- To compare the effectiveness of DBS using the Burke-Fahn-Marsden Rating Scale motor (BFMRS-M) score and the Global Dystonia Rating Scale (GDRS).
Main Methods:
- Reviewed standardized videos of patients with isolated non-acquired dystonia.
- Assessed baseline and post-DBS BFMRS-M and GDRS scores via blinded evaluation.
- Compared pre- and post-DBS scores using paired t-tests.
Main Results:
- Pallidal DBS improved total BFMRS-M scores (20.5 to 11.9) and GDRS scores (21.6 to 11.1).
- Significant improvements were observed in neck sub-scores for both BFMRS-M and GDRS.
- Shoulder and proximal arm GDRS sub-scores also showed significant improvement.
Conclusions:
- DBS efficacy in dystonia varies by body region, necessitating consideration in treatment planning.
- The GDRS is a more sensitive measure for dystonia treatment response than the BFMRS-M.
- GDRS should be more routinely integrated into studies of DBS treatment response.
