What are the most important nonmotor symptoms in patients with Parkinson's disease and are we missing them?

Non-motor symptoms of Parkinson's disease: dopaminergic pathophysiology and treatment

(2009) K Ray Chaudhuri et al.   LANCET NEUROLOGY

The PRIAMO study: A multicenter assessment of nonmotor symptoms and their impact on quality of life in Parkinson's disease

(2009) Paolo Barone et al.   MOVEMENT DISORDERS

Health related quality of life in early Parkinson's disease: Impact of motor and non-motor symptoms, results from Chinese levodopa exposed cohort

(2009) Zhaohui Qin et al.   PARKINSONISM & RELATED DISORDERS

Impact of Newer Pharmacological Treatments on Quality of Life in Patients with Parkinson???s Disease

(2008) David A Gallagher et al.   CNS DRUGS

A comprehensive model of health-related quality of life in Parkinson’s disease

(2008) M. Visser et al.   JOURNAL OF NEUROLOGY

Movement Disorder Society-sponsored revision of the Unified Parkinson's Disease Rating Scale (MDS-UPDRS): Scale presentation and clinimetric testing results

(2008) Christopher G. Goetz et al.   MOVEMENT DISORDERS

Nonmotor symptoms as presenting complaints in Parkinson's disease: A clinicopathological study

(2007) Sean S. O'Sullivan et al.   MOVEMENT DISORDERS

Nonmotor symptoms of Parkinson's disease: Prevalence and awareness of patients and families

(2007) Sang-Myung Cheon et al.   PARKINSONISM & RELATED DISORDERS