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Related Experiment Video

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Investigating Sleep Concerns in Cervical Dystonia.

Abhimanyu Mahajan1, David Andrés González2, Cynthia Comella2

  • 1James J. and Joan A. Gardner Family Center For Parkinson's Disease and Movement Disorders, University of Cincinnati, Cincinnati, Ohio, USA.

Movement Disorders Clinical Practice
|October 17, 2025
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Summary

Sleep concerns are prevalent in cervical dystonia (CD). OnabotulinumtoxinA treatment significantly improves sleep, with mood and pain also impacting sleep quality in CD patients.

Keywords:
botulinum toxincervical dystoniamoodnon‐motorpainsleep

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Area of Science:

  • Neurology
  • Sleep Medicine
  • Clinical Research

Background:

  • Sleep disturbances are complex in dystonia due to small cohorts and co-occurring pain and psychiatric issues.
  • Understanding sleep patterns in cervical dystonia (CD) remains challenging.
  • Existing research often overlooks the intricate relationship between sleep, pain, and mood in CD.

Purpose of the Study:

  • To investigate the prevalence and characteristics of sleep concerns in individuals with cervical dystonia (CD).
  • To evaluate the impact of OnabotulinumtoxinA treatment on sleep disturbances in CD patients.
  • To identify factors, including non-motor symptoms, that influence sleep improvement in CD.

Main Methods:

  • Longitudinal data from the CD-PROBE study were analyzed for toxin-naïve or injection-naïve CD subjects.
  • The Cervical Dystonia Impact Profile was used to assess sleep disturbances.
  • Multilevel mixed-effects models analyzed the impact of OnabotulinumtoxinA on sleep, controlling for covariates.

Main Results:

  • Over half of CD patients (56%) reported significant sleep issues, including problems with sleep initiation, restfulness, maintenance, and duration.
  • Initial OnabotulinumtoxinA treatment demonstrated a statistically significant improvement in sleep quality (P < 0.001).
  • Motor severity (β: 0.20), mood (β: 0.36), and pain (β: 0.58) were significant predictors of sleep improvement over three treatment cycles.

Conclusions:

  • Sleep concerns are a common and significant issue for individuals with cervical dystonia (CD).
  • OnabotulinumtoxinA treatment provides both initial and sustained improvement in sleep for CD patients.
  • The substantial impact of mood and pain on sleep underscores the importance of addressing non-motor symptoms in CD management.