The Relationship Between Limb Dystonia Severity and Functional Impact in Children With Cerebral Palsy.

Authors

Emma Lott, Susie Kim, Joanna Blackburn, Rose Gelineau-Morel, Dararat Mingbunjerdsuk, Jennifer O'Malley, Laura Tochen, Jeff L Waugh, Steve Wu, Bhooma R Aravamuthan

Published in

Journal of child neurology. Pages 8830738261477966. Aug 21, 2026. Epub Aug 21, 2026.

Abstract

Dystonia treatment evaluation in cerebral palsy (CP) is limited by the lack of clinician-assessed scales linking dystonia severity to functional impact. We asked 7 pediatric movement disorder specialists to review videos of 27 children with CP while performing an upper extremity task and while walking. Experts rated arm and leg dystonia severity using the Global Dystonia Severity Rating Scale (GDRS) and task-specific functional impact on a 5-point scale adapted from the Dyskinetic Cerebral Palsy Functional Impact Scale. Arm GDRS scores correlated with functional impact on the upper extremity task (linear regression R² = 0.48, P = .0005). Leg GDRS scores correlated with gait impact (R² = 0.43, P = .001). A 4-point increase in total GDRS corresponded to a 1-point worsening in combined functional impact. By demonstrating how expert-rated limb dystonia severity correlates with functional impact in children with CP, these results could help clinically identify functionally meaningful differences in dystonia severity.

PMID:
42630060
Bibliographic data and abstract were imported from PubMed on 22 Aug 2026.

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