Parkinson's disease and nocturnal polyuria

Abstract

AbstractBackgroundThe question of whether Parkinson's disease (PD) patients have nocturnal polyuria (NP) has not yet been fully answered.ObjectivesTo determine whether NP was present in PD patients and if so, what its relevant factors were.MethodsThis was a retrospective analysis. We had 36 consecutive referred PD patients: age, 71.5 years (range, 54–83 years); 24 men, 12 women; mean disease duration, 2.5 years (1.0–4.5 years); Hoehn and Yahr motor scale, 3.0 (2.0–3.5); all ambulatory; all on treatment. All the PD patients completed a lower urinary tract symptom (LUTS questionnaire) and a bladder diary, and underwent urodynamics testing.ResultsNP was identified in 56% of patients. NP was more common in patients with nocturia (p < 0.05), and in patients with urodynamic detrusor overactivity (p < 0.01). There was no relation between NP and gender, age, PD medications, blood pressure, or comorbid diabetes.ConclusionsA total of 56% of PD patients had NP, which had a close relation with detrusor overactivity (p < 0.01). These findings suggest that in PD, the loss of dopaminergic neurons leads to NP (hypothalamic circuit) and detrusor overactivity (nigrostriatal circuit).