Speech Treatment for Parkinson's Disease
NeuroRehabilitation 20 (2005) 205–221 205 IOS Press Speech treatment for Parkinson’s disease a,b, c c,d e f Marilyn Trail ∗, Cynthia Fox , Lorraine Olson Ramig , Shimon Sapir , Julia Howard and Eugene C. Laib,e aParkinson’s Disease Research, Education and Clinical Center, Michael E. DeBakey VA Medical Center, Houston, TX, USA bBaylor College of Medicine, Houston, TX 77030, USA cNational Center for Voice and Speech, Denver, CO, USA dDepartment of Speech, Language, Hearing Sciences, University of Colorado-Boulder, Boulder, CO, USA eDepartment of Communication Sciences and Disorders, Faculty of Social Welfare and Health Studies, University of Haifa, Haifa, Israel f Parkinson’s Disease Research, Education and Clinical Center, Philadelphia VA Medical Center, Philadelphia, PA, USA Abstract. Researchers estimate that 89% of people with Parkinson’s disease (PD) have a speech or voice disorder including disorders of laryngeal, respiratory, and articulatory function. Despite the high incidence of speech and voice impairment, studies suggest that only 3–4% of people with PD receive speech treatment. The authors review the literature on the characteristics and features of speech and voice disorders in people with PD, the types of treatment techniques available, including medical, surgical, and behavioral therapies, and provide recommendations for the current efficacy of treatment interventions and directions of future research. Keywords: Parkinson’s disease, speech and voice disorders, speech and voice treatment, hypokinetic dysarthria, hypophonia 1. Introduction phonia), reduced pitch variation (monotone), breathy and hoarse voice quality and imprecise articulation [32, Successful treatment of speech disorders in people 33,99,148], together with lessened facial expression with progressive neurological diseases, such as Parkin- (masked facies), contribute to limitations in communi- son disease (PD) can be challenging.
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