Spasmodic Dysphonia

A Review. Part 2: Characterization of Pathophysiology

Justin M. Hintze, Christy L. Ludlow, Stephen F. Bansberg, Charles Howard Adler, David G Lott

Research output: Contribution to journalReview article

5 Citations (Scopus)

Abstract

Objective: The purpose of this review is to describe the recent advances in characterizing spasmodic dysphonia. Spasmodic dysphonia is a task-specific focal laryngeal dystonia characterized by irregular and uncontrolled voice breaks. The pathophysiology is poorly understood, and there are diagnostic difficulties. Data Sources: PubMed, Google Scholar, and Cochrane Library. Review Methods: The data sources were searched using the following search terms: (spasmodic dysphonia or laryngeal dystonia) and (etiology, aetiology, diagnosis, pathogenesis, or pathophysiology). Conclusion: The diagnosis of spasmodic dysphonia can be difficult due to the lack of a scientific consensus on diagnostic criteria and the fact that other voice disorders may present similarly. Confusion can arise between spasmodic dysphonia and muscle tension dysphonia. Spasmodic dysphonia symptoms are tied to particular speech sounds, whereas muscle tension dysphonia is not. With the advent of more widespread use of high-speed laryngoscopy and videokymography, measures of the disruptions in phonation and delays in the onset of vocal fold vibration after vocal fold closure can be quantified. Recent technological developments have expanded our understanding of the pathophysiology of spasmodic dysphonia. Implications for Practice: A 3-tiered approach, involving a questionnaire, followed by speech assessment and nasolaryngoscopy is the most widely accepted method for making the diagnosis in most cases. More experimental and invasive techniques such as electromyography and neuroimaging have been explored to further characterize spasmodic dysphonia and aid in diagnosing difficult cases.

Original languageEnglish (US)
Pages (from-to)558-564
Number of pages7
JournalOtolaryngology - Head and Neck Surgery (United States)
Volume157
Issue number4
DOIs
StatePublished - Oct 1 2017

Fingerprint

Dysphonia
Muscle Tonus
Vocal Cords
Information Storage and Retrieval
Voice Disorders
Phonation
Confusion
Laryngoscopy
Phonetics
Dystonia
Electromyography
Vibration
PubMed
Neuroimaging
Libraries
Consensus

Keywords

  • characterization
  • laryngeal dystonia
  • pathophysiology
  • spasmodic dysphonia

ASJC Scopus subject areas

  • Surgery
  • Otorhinolaryngology

Cite this

Spasmodic Dysphonia : A Review. Part 2: Characterization of Pathophysiology. / Hintze, Justin M.; Ludlow, Christy L.; Bansberg, Stephen F.; Adler, Charles Howard; Lott, David G.

In: Otolaryngology - Head and Neck Surgery (United States), Vol. 157, No. 4, 01.10.2017, p. 558-564.

Research output: Contribution to journalReview article

@article{790cf27bd34c483582db69f08fe13dcd,
title = "Spasmodic Dysphonia: A Review. Part 2: Characterization of Pathophysiology",
abstract = "Objective: The purpose of this review is to describe the recent advances in characterizing spasmodic dysphonia. Spasmodic dysphonia is a task-specific focal laryngeal dystonia characterized by irregular and uncontrolled voice breaks. The pathophysiology is poorly understood, and there are diagnostic difficulties. Data Sources: PubMed, Google Scholar, and Cochrane Library. Review Methods: The data sources were searched using the following search terms: (spasmodic dysphonia or laryngeal dystonia) and (etiology, aetiology, diagnosis, pathogenesis, or pathophysiology). Conclusion: The diagnosis of spasmodic dysphonia can be difficult due to the lack of a scientific consensus on diagnostic criteria and the fact that other voice disorders may present similarly. Confusion can arise between spasmodic dysphonia and muscle tension dysphonia. Spasmodic dysphonia symptoms are tied to particular speech sounds, whereas muscle tension dysphonia is not. With the advent of more widespread use of high-speed laryngoscopy and videokymography, measures of the disruptions in phonation and delays in the onset of vocal fold vibration after vocal fold closure can be quantified. Recent technological developments have expanded our understanding of the pathophysiology of spasmodic dysphonia. Implications for Practice: A 3-tiered approach, involving a questionnaire, followed by speech assessment and nasolaryngoscopy is the most widely accepted method for making the diagnosis in most cases. More experimental and invasive techniques such as electromyography and neuroimaging have been explored to further characterize spasmodic dysphonia and aid in diagnosing difficult cases.",
keywords = "characterization, laryngeal dystonia, pathophysiology, spasmodic dysphonia",
author = "Hintze, {Justin M.} and Ludlow, {Christy L.} and Bansberg, {Stephen F.} and Adler, {Charles Howard} and Lott, {David G}",
year = "2017",
month = "10",
day = "1",
doi = "10.1177/0194599817728465",
language = "English (US)",
volume = "157",
pages = "558--564",
journal = "Otolaryngology - Head and Neck Surgery (United States)",
issn = "0194-5998",
publisher = "Mosby Inc.",
number = "4",

}

TY - JOUR

T1 - Spasmodic Dysphonia

T2 - A Review. Part 2: Characterization of Pathophysiology

AU - Hintze, Justin M.

AU - Ludlow, Christy L.

AU - Bansberg, Stephen F.

AU - Adler, Charles Howard

AU - Lott, David G

PY - 2017/10/1

Y1 - 2017/10/1

N2 - Objective: The purpose of this review is to describe the recent advances in characterizing spasmodic dysphonia. Spasmodic dysphonia is a task-specific focal laryngeal dystonia characterized by irregular and uncontrolled voice breaks. The pathophysiology is poorly understood, and there are diagnostic difficulties. Data Sources: PubMed, Google Scholar, and Cochrane Library. Review Methods: The data sources were searched using the following search terms: (spasmodic dysphonia or laryngeal dystonia) and (etiology, aetiology, diagnosis, pathogenesis, or pathophysiology). Conclusion: The diagnosis of spasmodic dysphonia can be difficult due to the lack of a scientific consensus on diagnostic criteria and the fact that other voice disorders may present similarly. Confusion can arise between spasmodic dysphonia and muscle tension dysphonia. Spasmodic dysphonia symptoms are tied to particular speech sounds, whereas muscle tension dysphonia is not. With the advent of more widespread use of high-speed laryngoscopy and videokymography, measures of the disruptions in phonation and delays in the onset of vocal fold vibration after vocal fold closure can be quantified. Recent technological developments have expanded our understanding of the pathophysiology of spasmodic dysphonia. Implications for Practice: A 3-tiered approach, involving a questionnaire, followed by speech assessment and nasolaryngoscopy is the most widely accepted method for making the diagnosis in most cases. More experimental and invasive techniques such as electromyography and neuroimaging have been explored to further characterize spasmodic dysphonia and aid in diagnosing difficult cases.

AB - Objective: The purpose of this review is to describe the recent advances in characterizing spasmodic dysphonia. Spasmodic dysphonia is a task-specific focal laryngeal dystonia characterized by irregular and uncontrolled voice breaks. The pathophysiology is poorly understood, and there are diagnostic difficulties. Data Sources: PubMed, Google Scholar, and Cochrane Library. Review Methods: The data sources were searched using the following search terms: (spasmodic dysphonia or laryngeal dystonia) and (etiology, aetiology, diagnosis, pathogenesis, or pathophysiology). Conclusion: The diagnosis of spasmodic dysphonia can be difficult due to the lack of a scientific consensus on diagnostic criteria and the fact that other voice disorders may present similarly. Confusion can arise between spasmodic dysphonia and muscle tension dysphonia. Spasmodic dysphonia symptoms are tied to particular speech sounds, whereas muscle tension dysphonia is not. With the advent of more widespread use of high-speed laryngoscopy and videokymography, measures of the disruptions in phonation and delays in the onset of vocal fold vibration after vocal fold closure can be quantified. Recent technological developments have expanded our understanding of the pathophysiology of spasmodic dysphonia. Implications for Practice: A 3-tiered approach, involving a questionnaire, followed by speech assessment and nasolaryngoscopy is the most widely accepted method for making the diagnosis in most cases. More experimental and invasive techniques such as electromyography and neuroimaging have been explored to further characterize spasmodic dysphonia and aid in diagnosing difficult cases.

KW - characterization

KW - laryngeal dystonia

KW - pathophysiology

KW - spasmodic dysphonia

UR - http://www.scopus.com/inward/record.url?scp=85030649399&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85030649399&partnerID=8YFLogxK

U2 - 10.1177/0194599817728465

DO - 10.1177/0194599817728465

M3 - Review article

VL - 157

SP - 558

EP - 564

JO - Otolaryngology - Head and Neck Surgery (United States)

JF - Otolaryngology - Head and Neck Surgery (United States)

SN - 0194-5998

IS - 4

ER -