ArticleBMJ neurology open2026
Tolerating uncertainty to treat functional motor disorder.
Article in BMJ neurology open, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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5 authors.
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Abstract
Background: Difficulty tolerating the uncertainty of ambiguous or unpredictable situations may influence how patients with functional motor disorder (FMD) respond to treatment. However, only one study has examined the role of intolerance of uncertainty (IU) in FMD treatment. Objectives: This study sought to expand on prior findings in a larger sample of patients with FMD who completed an intensive motor-retraining programme. Methods: A consecutive cohort of 109 patients with FMD completed a 1-week intensive outpatient motor-retraining programme. Patients rated their IU using the Intolerance of Uncertainty Scale-12 and functional motor outcomes using three empirical measures before and after treatment. Univariate and multivariable analyses were conducted to (1) characterise the rate of elevated IU, (2) evaluate potential changes in IU across the programme, (3) examine whether changes in IU predict improvements in motor functioning and (4) determine if IU incrementally predicts functional improvements in patients with clinically elevated IU. Results: Findings revealed that clinically elevated IU was common (yielding a base rate of 44%) and that the 'prospective' subtype of IU significantly decreased with 1 week of FMD treatment. Change in IU was not significantly associated with improved functional outcomes across the sample. However, change in prospective IU did predict patient-specific functional outcomes among those with clinically elevated IU ( Conclusions: Findings support prior work suggesting that certain subtypes of IU are common, modifiable and related to treatment outcomes in FMD. The 'prospective' subtype of IU may represent an operative factor that can enhance the efficacy of existing FMD rehabilitation programmes.
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