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Parkinson's disease or Parkinsonism,

commonly have voice and speech problems," said Jessica Huber, an associate professor in Purdue's Department of Speech, Language and Hearing Sciences. "At some point in their disease they will have some form of voice or speech disorderspeech disorder Articulation deficiency, dysfluency, speech disturbance, voice disorder Audiology Any of a group of defects in speech involving abnormal pitch, loudness, or quality of sound produced by the larynx Neurology A disorder of impaired or ineffective

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that generally occurs a little later in the disease."