Treatment effects for dysphagia in Parkinson's disease: A systematic review

Background Dysphagia remains a common problem in Parkinson's disease (PD). Previous systematic reviews on therapy effects for oropharyngeal dysphagia in PD have shown a lack of evidence. In the past 5 years several placebo or sham-controlled trials with varying results have been published. Objective The aim of this systematic literature review is to summarize and qualitatively analyze the published studies on this matter. Method(s) Studies...