Singer's Dystonia: First Report of a Variant of Spasmodic Dysphonia

Chitkara, Ajay; Meyer, Tanya K.; Keidar, Anat; Blitzer, Andrew

doi:10.1177/000348940611500201

Cited by 24 publications

(23 citation statements)

References 7 publications

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“…Given that the neural circuits responsible for the control of speaking and singing potentially overlap, our findings suggest that these regional alterations, too, reflect a commonly affected voice‐specialized modality across different forms of laryngeal dystonia. Clinically, these findings support evidence showing that the phenomenology of laryngeal TSFDs is often interlocked: the majority of SD patients report their singing being affected similar to speaking, whereas SLD patients gradually develop SD symptoms …”

Section: Discussionsupporting

confidence: 81%

Functional and structural neural bases of task specificity in isolated focal dystonia

et al. 2019

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Background Task‐specific focal dystonias selectively affect movements during the production of highly learned and complex motor behaviors. Manifestation of some task‐specific focal dystonias, such as musician's dystonia, has been associated with excessive practice and overuse, whereas the etiology of others remains largely unknown. Objectives In this study, we aimed to examine the neural correlates of task‐specific dystonias in order to determine their disorder‐specific pathophysiological traits. Methods Using multimodal neuroimaging analyses of resting‐state functional connectivity, voxel‐based morphometry and tract‐based spatial statistics, we examined functional and structural abnormalities that are both common to and distinct between four different forms of task‐specific focal dystonias. Results Compared to the normal state, all task‐specific focal dystonias were characterized by abnormal recruitment of parietal and premotor cortices that are necessary for both modality‐specific and heteromodal control of the sensorimotor network. Contrasting the laryngeal and hand forms of focal dystonia revealed distinct patterns of sensorimotor integration and planning, again involving parietal cortex in addition to inferior frontal gyrus and anterior insula. On the other hand, musician's dystonia compared to nonmusician's dystonia was shaped by alterations in primary and secondary sensorimotor cortices together with middle frontal gyrus, pointing to impairments of sensorimotor guidance and executive control. Conclusion Collectively, this study outlines a specialized footprint of functional and structural alterations in different forms of task‐specific focal dystonia, all of which also share a common pathophysiological framework involving premotor‐parietal aberrations. © 2019 International Parkinson and Movement Disorder Society

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Section: Discussionsupporting

confidence: 81%

Functional and structural neural bases of task specificity in isolated focal dystonia

et al. 2019

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“…Laryngeal adductor dystonia is the predominant form of spasmodic dysphonia described in professional singers [71]. It manifests as mid-range loss of singing voice due to strain, roughness and loss of vibrato.…”

Section: Other Instrumentsmentioning

confidence: 99%

Motor and Sensory Dysfunction in Musician's Dystonia

Chang¹

2013

Current Neuropharmacology

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Musicians’ dystonia is a task-specific and painless loss of motor control in a previously well-executed task. It is increasingly recognized in the medical and musical community. Recent advances in neuroimaging, transcranial magnetic stimulation and novel techniques in electroencephalography have shed light on its underlying pathophysiology. To date, a deranged cortical plasticity leading to abnormal sensorimotor integration, combined with reduced inhibition across several levels of the motor pathway are likely mechanisms.This paper reviews the various phenomenology of musician’s dystonia across keyboard, string, brass, flute and drum players. Treatment is often challenging. Medical therapies like botulinum toxin injection and rehabilitation method with sensorimotor training offer symptomatic relief and return to baseline performance to some musicians.

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“…However, considering the postoperative tendency for the intensity to increase, it is better to set the voice as very slightly breathy or weak rather than optimal. Chitkara et al reported that singer's dystonia is a previously undescribed variation of spasmodic dysphonia that affects the singing voice [11]. Most of these patients were found to display adductor hyperfunction in the mid range of the singing voice, producing straining, fatigue, roughness, and loss of vibration [11].…”

Section: Discussionmentioning

confidence: 99%

Outcomes of type II thyroplasty for adductor spasmodic dysphonia: analysis of revision and unsatisfactory cases

Sanuki

Isshiki²

2009

Acta Oto-Laryngologica

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Ninety AdSD patients underwent type II thyroplasty. The results in one patient were limited because a pathological mechanism other than AdSD was also involved. One patient, a singer, who wanted a more intense voice for singing was dissatisfied with the results. In three patients, the material used for fixation was inadequate. In two other patients, the method of application of the fixative material was found to be insufficient as it did not include both the upper and lower sides.

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Singer's Dystonia: First Report of a Variant of Spasmodic Dysphonia

Abstract: Singer's dystonia is a previously undescribed neurologic disorder that should be understood by those who treat voice performers and voice disorders.

Cited by 24 publications

References 7 publications

Functional and structural neural bases of task specificity in isolated focal dystonia

Functional and structural neural bases of task specificity in isolated focal dystonia

Motor and Sensory Dysfunction in Musician's Dystonia

Outcomes of type II thyroplasty for adductor spasmodic dysphonia: analysis of revision and unsatisfactory cases

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