Does Parkinson's disease affect sleep quality?

Background: Parkinson's disease (PD) is a common neurodegenerative disease that is linked to several motor and nonmotor symptoms, including sleep disturbances. Patient quality of life has been shown to be disproportionally impacted by disease.

Objectives: To investigate sleep quality among individuals with PD, and to assess the severity of sleep disturbances and their impact on daytime activities.