Pharyngeal Dystonia Mimicking Spasmodic Dysphonia

Shi, Lucy L.; Simpson, C. Blake; Hapner, Edie R.; Jinnah, Hyder A.; Johns, Michael M.

doi:10.1016/j.jvoice.2017.05.004

Cited by 5 publications

(3 citation statements)

References 14 publications

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“…2 In addition, dystonia-related swallowing difficulties typically correspond to pharyngeal dystonia, which is not scored in the GDRS but often linked with laryngeal dystonia. [12][13][14] Results…”

Section: Discussionmentioning

confidence: 99%

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An Empirical Comparison of Commonly Used Universal Rating Scales for Dystonia

Boz,

Kilic‐Berkmen,

Perlmutter

et al. 2023

Movement Disord Clin Pract

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BackgroundThere are several widely used clinical rating scales for documenting the severity and distribution of various types of dystonia.ObjectivesThe goal of this study was to evaluate the performance of the most commonly used scales in a large group of adults with the most common types of isolated dystonia.MethodsGlobal Dystonia Rating Scale (GDRS) and the Burke‐Fahn‐Marsden Dystonia Rating Scale (BFM) scores were obtained for 3067 participants. Most had focal or segmental dystonia, with smaller numbers of multifocal or generalized dystonia. These scales were also compared for 209 adults with cervical dystonia that had Toronto Western Spasmodic Torticollis Rating Scale (TWSTRS) scores and 210 adults with blepharospasm that had Blepharospasm Severity Scale (BSRS) scores.ResultsThere were strong correlations between the GDRS and BFM total scores (r = 0.79) and moderate correlations for their sub scores (r > 0.5). Scores for both scales showed positive skew, with an overabundance of low scores. BFM sub‐scores were not normally distributed, due to artifacts caused by the provoking factor. Relevant sub‐scores of the GDRS and BFM also showed moderate correlations with the TWSTRS (r > 0.5) for cervical dystonia and the BSRS (r > 0.5) for blepharospasm.ConclusionsThe BFM is more widely used than the GDRS, but these results suggest the GDRS may be preferable for focal and segmental dystonias. The overabundance of very low scores for both scales highlights challenges associated with discriminating very mild dystonia from other abnormal movements or variants of normal behavior.This article is protected by copyright. All rights reserved.

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Section: Discussionmentioning

confidence: 99%

“…However, this BFM item was compared only with the larynx score of the GDRS, because laryngeal dystonia is more common than oromandibular dystonia 2 . In addition, dystonia‐related swallowing difficulties typically correspond to pharyngeal dystonia, which is not scored in the GDRS but often linked with laryngeal dystonia 12–14 …”

Section: Methodsmentioning

confidence: 99%

An Empirical Comparison of Commonly Used Universal Rating Scales for Dystonia

Boz,

Kilic‐Berkmen,

Perlmutter

et al. 2023

Movement Disord Clin Pract

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“…However, dystonia localized only in the pharyngeal muscle is extremely rare, and its pathogenesis is unclear and scarcely reported. Some studies have reported dysphonia and dysphagia due to pharyngeal dystonia, but a treatment strategy has not yet been established [6].…”

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confidence: 99%

Pharyngeal Dystonia Misdiagnosed as Cricopharyngeal Dysphagia Successfully Treated by Pharmacotherapy

et al. 2019

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Dysphagia after stroke is a common symptom reported in 28%-65% of patients [1]. As various parts of the brain are involved in swallowing, clinical manifestations of swallowing disorder vary [2]. Cricopharyngeal dysphagia (CPD) is a swallowing disorder caused by an inappropriate constriction of the cri-copharyngeal muscle, and the medulla is the most causative location [3]. To date, CPD treatment is focused on the relaxation of the cricopharyngeus muscle, for which methods such as injection of botulinum neurotoxin (BoNT), balloon dilatation, and myotomy are often used [4]. Meanwhile, little is known about pharmacotherapy. Apart from CPD, inappropriate relaxation of the pha-Annals of Rehabilitation Medicine

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Dystonia

Frucht,

Termsarasab

2024

Movement Disorders Phenomenology

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Pharyngeal Dystonia Mimicking Spasmodic Dysphonia

Cited by 5 publications

References 14 publications

An Empirical Comparison of Commonly Used Universal Rating Scales for Dystonia

An Empirical Comparison of Commonly Used Universal Rating Scales for Dystonia

Pharyngeal Dystonia Misdiagnosed as Cricopharyngeal Dysphagia Successfully Treated by Pharmacotherapy

Dystonia

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