Relationship of Nocturnal Sleep Dysfunction and Pain Subtypes in Parkinson's Disease.

Background: Little research has been conducted regarding the relationship between sleep disorders and different pain types in Parkinson's disease (PD).

Objective: To explore the influence of the various pain subtypes experienced by PD patients on sleep.

Methods: Three hundred consecutive PD patients were assessed with the PD Sleep Scale-Version 2 (PDSS-2), King's PD Pain Scale (KPPS), King's PD Pain Questionnaire (KPPQ), Visual Analog Scales for Pain (VAS-Pain), and Hospital Anxiety and Depression Scale.