What is the Lee Silverman Voice Treatment (LSVT) program for Parkinson disease (PD)?

Updated: Aug 29, 2019
  • Author: Robert A Hauser, MD, MBA; Chief Editor: Selim R Benbadis, MD  more...
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The Lee Silverman Voice Treatment (LSVT) is a program designed to increase vocal intensity in patients with Parkinson disease. The treatment focuses on a simple set of tasks that are practiced intensively, 4 sessions per week during a 4-week period, resulting in maximization of phonatory and respiratory functions. The goal of LSVT is to improve vocal performance for 6-24 months without interval intervention. LSVT focuses on maximizing vocal effort ("think loud, think shout") and maximizing sensory perception of vocal effort and loudness by therapists. Therapists who quantify results give constant feedback to patients during sessions and encourage patients to self-monitor and internally calibrate their loudness. After LSVT, patients with Parkinson disease speak at a normal volume and with a healthy voice quality despite the need to "think loud, think shout."

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