Background: Nocturia has a high prevalence in Parkinson's Disease (PD) and is known to be a bothersome symptom for people with Parkinson's disease (PwPD).
Objective: to characterize nocturia in a sample of PwPD, in relation to sleep, fatigue and other non-motor symptoms (NMS).
Methods: we assessed 130 PwPD using a comprehensive battery of scales, which includes the Non-Motor Symptoms Questionnaire (NMSQ), International Parkinson and Movement Disorder Society Non-Motor Rating Scale (MDS-NMS), Parkinson's Disease Sleep Scale version 2 (PDSS-2), Parkinson's Disease Questionnaire (PDQ-39), The Overactive Bladder Questionnaire-Short form (OABq-SF), and the Parkinson's Fatigue Scale (PFS-16).
Results: according to the positive answers to the item of the NMSQ related to nocturia, patients were divided into PwPD + nocturia, and PwPD - nocturia. Nocturia was reported by 112 patients (86.15%). Quality of life in PwPD + nocturia was worse than in PwPD - nocturia, according to the PDQ-39 scores (13.32 ± 9.00 vs. 26.29 ± 14.55, p < 0.001). Sleep was significantly disturbed in PwPD + nocturia compared to PwPD - nocturia, according to the total scores of various scales, such as PDSS-2, PFS-16. PwPD who complained of nocturia presented higher scores of several NMS.
Conclusions: nocturia has a high prevalence in PwPD and it is associated with impaired sleep, fatigue, and reduced quality of life.
Keywords: Parkinson’s disease; fatigue; nocturia; non-motor symptoms; sleep dysfunctions; urinary tract dysfunctions.