Summary
Objective
The purpose of this research was to determine whether an association between laryngeal
hypersensitivity (LH) and spasmodic dysphonia (SD) exists using the LH Questionnaire
(LHQ). This study also explored the prevalence of self-reported upper respiratory
infection (URI) at the time of SD onset across SD phenotypes.
Methods
Individuals with and without SD were recruited to complete an online survey measure.
All respondents provided demographic information and completed the LHQ. Participants
with SD were also asked to provide information about their diagnosed SD subtype and
pattern of onset, including whether onset was associated with a URI. The percentage
of respondents with and without SD who were classified with LH was determined based
on the LHQ. Scores on the LHQ were also compared between the non-SD and the SD groups,
as well as between SD phenotypes (adductor SD, abductor SD, and mixed)).
Results and Conclusions
Significant associations were found between ADSD and LH, mixed SD and LH, and URI
at time of SD onset and increased severity of LH symptoms. These findings suggest
that laryngeal sensory symptoms may potentially contribute to or result from motor
spasms in SD and/or have implications for its pathophysiology.
Key Words
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Article info
Publication history
Published online: January 20, 2021
Accepted:
December 30,
2020
Identification
Copyright
© 2021 The Voice Foundation. Published by Elsevier Inc. All rights reserved.
