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Published in: Neurological Sciences 3/2021

01-03-2021 | Tremor | Review Article

Clinical features associated with drooling in Parkinson’s disease

Author: David Nascimento

Published in: Neurological Sciences | Issue 3/2021

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Abstract

Introduction

Drooling is characterized by an excessive pooling of saliva in the oral cavity. The exact pathophysiological mechanism of drooling in Parkinson’s disease (PD) is not yet fully understood.

Objective

To identify the relationship between drooling and other clinical features in people diagnosed with PD.

Method

Research on the topic was carried out on the PubMed and ScienceDirect electronic databases. Articles published between March 2015 and March 2020 were selected. Search terms and inclusion and exclusion criteria were previously defined. The articles included met those requirements.

Results

Sixteen articles were included for analysis. The prevalence of drooling varies between 9.26 and 70% and can occur at any stage of the disease. Higher prevalence of drooling is related to disease duration, disease severity, older age, male, levodopa equivalent dose, hypomimia, dysphagia, dysarthria, cognition, sleep, non-dominant tremor, motor fluctuations, bradykinesia, more symmetric pattern, gastrointestinal and urinary problems, sexual dysfunction, obstipation, and orthostatic hypotension. However, it is not related to hallucinations, rapid eye movement sleep behavior disorder, akinetic-rigid PD, mixed, nor dyskinesias.

Conclusion

Drooling is not caused by a single factor; it is influenced and related to several clinical features. Some clinical factors participate in the onset of drooling while others are concomitant.
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Metadata
Title
Clinical features associated with drooling in Parkinson’s disease
Author
David Nascimento
Publication date
01-03-2021
Publisher
Springer International Publishing
Published in
Neurological Sciences / Issue 3/2021
Print ISSN: 1590-1874
Electronic ISSN: 1590-3478
DOI
https://doi.org/10.1007/s10072-020-05005-0

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