Volume 38, Issue 6 p. 1008-1026
Research Article

Scales for Antipsychotic-Associated Movement Disorders: Systematic Review, Critique, and Recommendations

Davide Martino MD, PhD

Corresponding Author

Davide Martino MD, PhD

Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada

Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada

Alberta Children's Research Institute, University of Calgary, Calgary, Alberta, Canada

Correspondence to: Dr. Davide Martino, Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Health Sciences Centre, 3330 Hospital Drive NW, Calgary, AB T2N 4N1, Canada; E-mail: [email protected]

Search for more papers by this author
Vikram Karnik MD

Vikram Karnik MD

Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada

Search for more papers by this author
Roongroj Bhidayasiri MD, FRCP, FRCPI

Roongroj Bhidayasiri MD, FRCP, FRCPI

Chulalongkorn Centre of Excellence for Parkinson's Disease & Related Disorders, Department of Medicine, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Bangkok, Thailand

The Academy of Science, The Royal Society of Thailand, Bangkok, Thailand

Search for more papers by this author
Deborah A. Hall MD, PhD

Deborah A. Hall MD, PhD

Division of Movement Disorders, Department of Neurological Sciences, Rush University Medical Center, Chicago, Illinois, USA

Search for more papers by this author
Robert A. Hauser MD, MBA

Robert A. Hauser MD, MBA

Parkinson's Disease and Movement Disorders Center, Parkinson Foundation Center of Excellence, Department of Neurology, University of South Florida, Tampa, Florida, USA

Search for more papers by this author
Antonella Macerollo MD, PhD

Antonella Macerollo MD, PhD

The Walton Centre NHS Foundation Trust for Neurology and Neurosurgery, Liverpool, United Kingdom

Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, United Kingdom

Search for more papers by this author
Tamara M. Pringsheim MD

Tamara M. Pringsheim MD

Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada

Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada

Department of Clinical Neurosciences, Psychiatry, Pediatrics and Community Health Sciences, University of Calgary, Calgary, Alberta, Canada

Mathison Centre for Mental Health Research and Education, Calgary, Alberta, Canada

Search for more papers by this author
Daniel Truong MD

Daniel Truong MD

The Parkinson's and Movement Disorder Institute, Orange Coast Memorial Medical Center, Fountain Valley, California, USA

Search for more papers by this author
Stewart A. Factor DO

Stewart A. Factor DO

Jean and Paul Amos Parkinson's Disease and Movement Disorder Program, Emory University School of Medicine, Atlanta, Georgia, USA

Search for more papers by this author
Matej Skorvanek MD, PhD

Matej Skorvanek MD, PhD

Department of Neurology, P.J. Safarik University, Kosice, Slovak Republic

Department of Neurology, University Hospital of L. Pasteur, Kosice, Slovak Republic

Search for more papers by this author
Anette Schrag MD, FRCP

Anette Schrag MD, FRCP

Department of Clinical Neurosciences, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom

Search for more papers by this author
Members of the IPMDS Rating Scales Review Committee

Members of the IPMDS Rating Scales Review Committee

Search for more papers by this author
First published: 20 April 2023
Citations: 2

Members of the IPMDS Rating Scales Review Committee are listed in the Appendix.

Relevant conflicts of interest/financial disclosures: Nothing to report.

Full financial disclosures and author roles may be found in the online version of this article.

Abstract

Background

Antipsychotic-associated movement disorders remain common and disabling. Their screening and assessment are challenging due to clinical heterogeneity and different use of nomenclature between psychiatrists and neurologists.

Objective

An International Parkinson and Movement Disorder Society subcommittee aimed to rate psychometric quality of severity and screening instruments for antipsychotic-associated movement disorders.

Methods

Following the methodology adopted by previous International Parkinson and Movement Disorders Society subcommittee papers, instruments for antipsychotic-associated movement disorders were reviewed, applying a classification as “recommended,” “recommended with caveats,” “suggested,” or “listed.”

Results

Our review identified 23 instruments. The highest grade of recommendation reached is “recommended with caveats,” assigned to seven severity rating instruments (Extrapyramidal Symptoms Rating Scale, Barnes Akathisia Rating Scale, Abnormal Involuntary Movements Scale, Drug-Induced Extra-Pyramidal Symptoms Scale, Maryland Psychiatric Research Centre involuntary movements scale, Simpson Angus Scale, and Matson Evaluation of Drug Side effects). Only three of these seven (Drug-Induced Extra-Pyramidal Symptoms Scale, Maryland Psychiatric Research Centre, Matson Evaluation of Drug Side effects) were also screening instruments. Their main caveats are insufficient demonstration of psychometric properties (internal consistency, skewing, responsiveness to change) and long duration of administration. Eight “suggested” instruments did not meet requirements for the “recommended” grade also because of insufficient psychometric validation. Other limitations shared by several instruments are lack of comprehensiveness in assessing the spectrum of antipsychotic-associated movement disorders and ambiguous nomenclature.

Conclusions

The high number of instruments “recommended with caveats” does not support the need for developing new instruments for antipsychotic-associated movement disorders. However, addressing the caveats with new psychometric studies and revising existing instruments to improve the clarity of their nomenclature are recommended next steps. © 2023 International Parkinson and Movement Disorder Society.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.