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Updated: Jul 7, 2025

Author Spotlight: Exploring Non-Motor Symptoms in Parkinson's Disease
Published on: September 22, 2023
[Lower gastrointestinal dysfunction in patients with Parkinson's disease]
A A Pilipovich1, O V Vorob'eva1, S A Makarov1
1Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia.
Most Parkinson's disease (PD) patients experience lower gastrointestinal tract dysfunction, primarily constipation. This dysfunction is linked to motor and non-motor symptoms, but not directly to dopaminergic therapy.
Area of Science:
- Neurology
- Gastroenterology
Context:
- Parkinson's disease (PD) is a neurodegenerative disorder affecting motor function.
- Gastrointestinal (GI) dysfunction is a common non-motor symptom in PD patients.
- Understanding the prevalence and associations of lower GI dysfunction is crucial for patient management.
Purpose:
- To evaluate the lower gastrointestinal tract dysfunction in Parkinson's disease (PD) patients.
- To explore the relationship between GI dysfunction and motor and non-motor symptoms in PD.
Summary:
- 71.2% of PD patients (Hoehn and Yahr stages I-III) reported constipation, while 27.9% experienced diarrhea.
- Constipation correlated with age, PD severity (H&Y stage, UPDRS), motor symptoms, and affective/autonomic disorders.
- Diarrhea was linked to constipation severity and other GI issues, but not directly to PD stage or core symptoms; dopaminergic therapy showed no effect.
Impact:
- Highlights the high prevalence of lower GI dysfunction in early-stage PD.
- Suggests non-dopaminergic pathways and comorbidities contribute to PD-related bowel issues.
- Informs clinical practice regarding the assessment and management of GI symptoms in Parkinson's disease.
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