Botulinum Neurotoxin Therapy in the Clinical Management of Laryngeal Dystonia

Laryngeal dystonia (LD), or spasmodic dysphonia (SD), is a chronic, task-specific, focal movement disorder affecting the larynx. It interferes primarily with the essential functions of phonation and speech. LD affects patients’ ability to communicate effectively and significantly diminishes their qu...

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Main Authors: Winnie Yeung, Amanda L. Richards, Daniel Novakovic
Format: Article
Language:English
Published: MDPI AG 2022-12-01
Series:Toxins
Subjects:
Online Access:https://www.mdpi.com/2072-6651/14/12/844
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author Winnie Yeung
Amanda L. Richards
Daniel Novakovic
author_facet Winnie Yeung
Amanda L. Richards
Daniel Novakovic
author_sort Winnie Yeung
collection DOAJ
description Laryngeal dystonia (LD), or spasmodic dysphonia (SD), is a chronic, task-specific, focal movement disorder affecting the larynx. It interferes primarily with the essential functions of phonation and speech. LD affects patients’ ability to communicate effectively and significantly diminishes their quality of life. Botulinum neurotoxin was first used as a therapeutic agent in the treatment of LD four decades ago and remains the standard of care for the treatment of LD. This article provides an overview of the clinical application of botulinum neurotoxin in the management of LD, focusing on the classification for this disorder, its pathophysiology, clinical assessment and diagnosis, the role of laryngeal electromyography and a summary of therapeutic injection techniques, including a comprehensive description of various procedural approaches, recommendations for injection sites and dosage considerations.
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spelling doaj.art-9245e91ab84346ceb636f02d22ce094c2023-11-24T18:26:45ZengMDPI AGToxins2072-66512022-12-01141284410.3390/toxins14120844Botulinum Neurotoxin Therapy in the Clinical Management of Laryngeal DystoniaWinnie Yeung0Amanda L. Richards1Daniel Novakovic2Voice Research Laboratory, Faculty of Medicine and Health, University of Sydney, Camperdown, NSW 2050, AustraliaDepartment of Otolaryngology, The Royal Melbourne Hospital, Parkville, VIC 3050, AustraliaVoice Research Laboratory, Faculty of Medicine and Health, University of Sydney, Camperdown, NSW 2050, AustraliaLaryngeal dystonia (LD), or spasmodic dysphonia (SD), is a chronic, task-specific, focal movement disorder affecting the larynx. It interferes primarily with the essential functions of phonation and speech. LD affects patients’ ability to communicate effectively and significantly diminishes their quality of life. Botulinum neurotoxin was first used as a therapeutic agent in the treatment of LD four decades ago and remains the standard of care for the treatment of LD. This article provides an overview of the clinical application of botulinum neurotoxin in the management of LD, focusing on the classification for this disorder, its pathophysiology, clinical assessment and diagnosis, the role of laryngeal electromyography and a summary of therapeutic injection techniques, including a comprehensive description of various procedural approaches, recommendations for injection sites and dosage considerations.https://www.mdpi.com/2072-6651/14/12/844botulinum neurotoxinlaryngeal dystoniaspasmodic dysphoniainjectionelectromyography
spellingShingle Winnie Yeung
Amanda L. Richards
Daniel Novakovic
Botulinum Neurotoxin Therapy in the Clinical Management of Laryngeal Dystonia
Toxins
botulinum neurotoxin
laryngeal dystonia
spasmodic dysphonia
injection
electromyography
title Botulinum Neurotoxin Therapy in the Clinical Management of Laryngeal Dystonia
title_full Botulinum Neurotoxin Therapy in the Clinical Management of Laryngeal Dystonia
title_fullStr Botulinum Neurotoxin Therapy in the Clinical Management of Laryngeal Dystonia
title_full_unstemmed Botulinum Neurotoxin Therapy in the Clinical Management of Laryngeal Dystonia
title_short Botulinum Neurotoxin Therapy in the Clinical Management of Laryngeal Dystonia
title_sort botulinum neurotoxin therapy in the clinical management of laryngeal dystonia
topic botulinum neurotoxin
laryngeal dystonia
spasmodic dysphonia
injection
electromyography
url https://www.mdpi.com/2072-6651/14/12/844
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