Nocebo-Hypothesis Cognitive Behavioral Therapy (NH-CBT) for Persons With Functional Neurological Symptoms (Motor Type): Design and Implementation of a Randomized Active-Controlled Trial
journal contributionposted on 2021-01-18, 02:38 authored by M Richardson, M Kleinstäuber, Dana WongDana Wong
© Copyright © 2020 Richardson, Kleinstäuber and Wong. Introduction: Functional Neurological Symptom Disorders (FNSD) are associated with high levels of disability and immense direct and indirect health costs. An innovative interdisciplinary rehabilitation approach for individuals with functional neurological symptoms of motor type–Nocebo-Hypothesis Cognitive Behavioral Therapy (NH-CBT)—combines CBT and movement retraining with video feedback embedded in a comprehensive explanatory model of the etiology of FNSD. Methods: This protocol describes the development and implementation of a phase II, parallel group, randomized controlled trial with blinded outcome assessors to compare the efficacy of NH-CBT with an active control condition (supportive counseling and movement retraining). Individuals meeting diagnostic criteria of an FNSD or psychogenic movement disorder will be randomly assigned to one of the 8-week interventions. Self-report scales of motor and other physical symptoms, symptom-related psychological variables, and assessor ratings of participants' mobility will be administered at baseline, and at 8- and 16-week follow-up. Adverse events will be monitored across all sessions and therapeutic alliance will be measured at the end of therapy. The primary statistical analysis will test the hypothesis that NH-CBT is more effective than the control intervention at the 8-week follow-up. Discussion: The therapeutic strategies of NH-CBT are theory-driven by assumptions of the predictive coding model of the etiology of FNSD. Strengths and limitations of this trial will be discussed. Trial registration: Australian New Zealand Clinical Trials Registry (ANZCTR; identifier: ACTRN12620000550909).
This work was supported by the Health Research Council of New Zealand (HRC) [Biomedical and Public Health Career Development Award, grant numbers 20/045]. The funder of the study has had no role in study design and will have no role in data collection, data analysis, data interpretation, writing of the report, or decision to submit the paper for publication.
JournalFrontiers in Neurology
Article NumberARTN 586359
PublisherFRONTIERS MEDIA SA
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Science & TechnologyLife Sciences & BiomedicineClinical NeurologyNeurosciencesNeurosciences & Neurologyfunctional neurological symptom disorderpsychogenic movement disordercognitive behavioral therapyphysical therapymovement retrainingpredictive coding modelrandomized controlled trialnocebo effectPSYCHOGENIC MOVEMENT-DISORDERSCONVERSION DISORDERCLINICAL-TRIALSCHRONIC PAINVALIDITYRELIABILITYDISABILITYREHABILITATIONPROTOCOLVERSION