Parkinson's disease (PD) is the second most common neurodegenerative disorder, and although it is usually considered as a disorder that only affects movement, a broad spectrum of non-motor symptoms (NMSs) can be observed in PD patients. Although the realities of the disease vary enormously from patient to patient, almost all of them have one or more NMS. In fact, a wide range of behavioural, neuropsychiatric, and physical symptoms frequently play a primary role in managing the disorder and constitute a major disease burden for patients and caregivers.

The current reprint includes a compilation of published articles about NMSs in Parkinson's disease and potential treatment strategies.