Spasmodic dysphonia and vocal tremor

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


Spasmodic dysphonia is a focal laryngeal dystonia affecting the voice. Several subtypes exist, presenting different diagnostic and treatment challenges. Vocal tremor is a separate disorder characterized by involuntary oscillation of the laryngeal and pharyngeal musculature, resulting in modulation of pitch and loudness. Overall there are many features of spasmodic dysphonia and vocal tremor that are still poorly understood. This chapter will review the disorders as well as the current levels of evidence for both nonsurgical and surgical management.

Original languageEnglish
Title of host publicationEvidence-Based Laryngology
PublisherSpringer International Publishing
Number of pages16
ISBN (Electronic)9783030584948
ISBN (Print)9783030584931
StatePublished - 19 Feb 2021


  • Botulinum toxin
  • Denervation-reinnervation surgery
  • Electromyography
  • Sodium oxybate
  • Spasmodic dysphonia
  • Vocal tremor
  • Voice therapy


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