Differences in clinical characteristics when REM sleep behavior disorder precedes or comes after the onset of Parkinson's disease

Rapid eye movement (REM) sleep behavior disorder (RBD) is important not only as a preclinical symptom of Parkinson's disease (PD), but also as an aggravating symptom of PD. However, it is not known whether the onset of RBD in relation to PD affects the clinical characteristics of PD. A cross-se...

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