Role of rapid eye movement sleep behavior disorder (RBD) and other clinical factors in the prediction of cognitive impairment in Parkinson's disease

We read with interest the article by Kenney et al. [ [1] Kenney L.E. Ratajska A.M. Lopez F.V. Marsiske M. Bowers D. Early rapid eye movement sleep behavior disorder predicts incident cognitive impairment in Parkinson's disease across ages. Parkinsonism Relat. Disorders. 2023 Apr 1; 110105392 PubMed Google Scholar ] reporting on the possible relationship between rapid eye movement sleep behavior disorder (RBD) and occurrence of cognitive impairment in patients with Parkinson's disease (PD).