LSVT programs are evidence-based speech, physical or occupational therapies. LSVT stands for Lee Silverman Voice Treatment. Named for Mrs. Lee Silverman, a woman living with Parkinson’s disease (PD), it was developed by Dr. Lorraine Ramig and has been scientifically studied for over 25 years with support from the National Institute for Deafness and other Communication Disorders within the National Institutes of Health (NIH) and other funding organizations.