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Primidone Therapy for Essential Vocal Tremor.

Andrew Nida1, Josie Alston1, John Schweinfurth1

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Summary

Primidone effectively treated essential vocal tremor in over half of patients, offering an alternative to botulinum neurotoxin injections. However, adverse effects were common, leading to discontinuation for some.

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Area of Science:

  • Neurology
  • Otolaryngology

Background:

  • Essential vocal tremor presents significant treatment challenges.
  • Pharmacologic interventions are sought to reduce reliance on botulinum neurotoxin injections.

Purpose of the Study:

  • To assess the efficacy of primidone for treating essential vocal tremor.

Main Methods:

  • Retrospective review of medical records for patients with essential vocal tremor treated with primidone.
  • Data collected included symptom improvement and subsequent botulinum neurotoxin therapy initiation.

Main Results:

  • Primidone improved vocal symptoms in 54% of patients.
  • Adverse effects occurred in 73% of patients, leading to discontinuation in 52% of those affected.
  • 53% of patients initiated botulinum toxin therapy post-primidone treatment.

Conclusions:

  • Primidone demonstrated efficacy in a subset of patients with essential vocal tremor.
  • It serves as a potential alternative pharmacologic treatment to botulinum neurotoxin injections.