HealthDay News — Declines in cognition may impact Parkinson’s patients’ ability to converse, according to research published in the Journal of Parkinson’s Disease.

Maxwell Barnish, PhD, formerly of the University of East Anglia in the United Kingdom, and colleagues reviewed 12 studies that included a total of 222 Parkinson’s disease patients.

The researchers found that both cognitive and physical impairments are associated with speech difficulties, but that patients with greater cognitive decline had more difficulty conversing.

“What this research tells us is that speech and language therapists need to assess the cognitive problems of people with Parkinson’s as well as their speech clarity when trying to improve everyday communication,” coauthor Katherine Deane, PhD, also of the University of East Anglia, said in a university news release. “It may be that patients who are struggling with thinking quickly need different communication strategies to help them in everyday life.”


Barnish M, Whibley D, Horton SMC, Butterfint ZR, Deane KHO. Roles of Cognitive Status and Intelligibility in Everyday Communication in People with Parkinson’s Disease: A Systematic Review. J Parkinsons Dis. 2016; doi:10.3233/JPD-150757.