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International Parkinson and Movement Disorder Society
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Unified Dyskinesia Rating Scale (UDysRS)

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Unified Dyskinesia Rating Scale (UDysRS)

Acronym: UDysRS

Authors: Christopher G. Goetz, John G. Nutt, Glenn T. Stebbins 

The Unified Dyskinesia Rating Scale captures the essential features of dyskinesia in Parkinson’s disease within a single scale, including patient perceptions, time factors, anatomical distribution, objective impairment, severity, and disability. The scale addresses the issues clinically pertinent to physicians dealing with dyskinesia in clinical and research settings as well as the issues clinically pertinent to patients experiencing dyskinesia.

Original PublicationView the Scale (PDF)

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 Certificate Program: Learn to administer the UDysRS »

Year Published: 2008

Scale Last Updated: August 31, 2016

Assessment Type: ClinRO and PRO

Estimated Time to Complete: 15 minutes

Available Translations:

The following translations have completed Cognitive Pre-testing. For more information about the Translation Program, please reference our Protocol for Official Non-English Language Translations.  Please contact for more information.

  • Arabic 
  • Danish
  • Dutch
  • Estonian
  • Serbian

MDS acknowledges and thanks the translation Program Leaders and contributors for the development and ongoing support of translations. 

Additional Scale Publications:

Goetz CG, Nutt JG, Stebbins GT, Chmura TA. Teaching program for the Unified Dyskinesia Rating Scale. Movement Disorders. 2009 Jul 15;24(9):1296-8.

Goetz CG, Stebbins GT, Theeuwes A, Stocchi F, Ferreira JJ, van de Witte S, Bronzova J. Temporal stability of the Unified Dyskinesia Rating Scale. Movement Disorders. 2011 Dec;26(14):2556-9.

Mestre TA, Beaulieu-Boire I, Aquino CC, Phielipp N, Poon YY, Lui JP, So J, Fox SH. What is a clinically important change in the Unified Dyskinesia Rating Scale in Parkinson's disease? Parkinsonism & Related Disorders. 2015 Nov 1;21(11):1349-54.

Luo S, Liu Y, Teresi JA, Stebbins GT, Goetz CG. Differential item functioning in the Unified Dyskinesia Rating Scale (UDysRS). Movement Disorders. 2017 Aug;32(8):1244-9.

Luo S, Ren X, Han W, Goetz CG, Stebbins GT. Missing Data in the Unified Dysksinesia Rating Scale (UDysRS). Movement Disorders Clinical Practice. 2018 Sep;5(5):523-6.


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