Non-motor symptoms burden in treated and untreated early Parkinson's disease patients: argument for non-motor subtypes

Non-motor symptoms: the core of multi-morbid Parkinson's disease

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Evaluation of mild cognitive impairment subtypes in Parkinson's disease

(2014) Brenna A. Cholerton et al.   MOVEMENT DISORDERS

Low clinical diagnostic accuracy of early vs advanced Parkinson disease: Clinicopathologic study

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The CamPaIGN study of Parkinson's disease: 10-year outlook in an incident population-based cohort

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Nonmotor and diagnostic findings in subjects with de novo Parkinson disease of the DeNoPa cohort

(2013) B. Mollenhauer et al.   NEUROLOGY

The spectrum of nonmotor symptoms in early Parkinson disease

(2013) T. K. Khoo et al.   NEUROLOGY

Unexplained lower limb pain in Parkinson's disease: A phenotypic variant of “painful Parkinson's disease”

(2013) Victoria C.J. Wallace et al.   PARKINSONISM & RELATED DISORDERS

A Proposal for a Comprehensive Grading of Parkinson's Disease Severity Combining Motor and Non-Motor Assessments: Meeting an Unmet Need

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The Heterogeneity of Early Parkinson’s Disease: A Cluster Analysis on Newly Diagnosed Untreated Patients

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Autonomic symptoms and dopaminergic treatment in de novo Parkinson's disease

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Link between non-motor symptoms and cognitive dysfunctions in de novo, drug-naive PD patients

(2012) Roberto Erro et al.   JOURNAL OF NEUROLOGY

Non-motor symptoms in early Parkinson's disease: a 2-year follow-up study on previously untreated patients

(2012) Roberto Erro et al.   JOURNAL OF NEUROLOGY NEUROSURGERY AND PSYCHIATRY

Rapid eye movement sleep behavior disorder and subtypes of Parkinson's disease

(2012) Silvia Rios Romenets et al.   MOVEMENT DISORDERS

Olfaction, dyskinesia and profile of weight change in Parkinson's disease: Identifying neurodegenerative phenotypes

(2012) Jagdish C. Sharma et al.   PARKINSONISM & RELATED DISORDERS

Depression and anxiety related subtypes in Parkinson's disease

(2011) R. G. Brown et al.   JOURNAL OF NEUROLOGY NEUROSURGERY AND PSYCHIATRY

The impact of non-motor symptoms on health-related quality of life of patients with Parkinson's disease

(2011) Pablo Martinez-Martin et al.   MOVEMENT DISORDERS

Milestones in Parkinson's disease-Clinical and pathologic features

(2011) Glenda Halliday et al.   MOVEMENT DISORDERS

Frequency of dementia, depression, and other neuropsychiatric symptoms in 1,449 outpatients with Parkinson’s disease

(2010) Oliver Riedel et al.   JOURNAL OF NEUROLOGY

Neuropsychological and clinical heterogeneity of cognitive impairment and dementia in patients with Parkinson's disease

(2010) Angie A Kehagia et al.   LANCET NEUROLOGY

Apathy in drug-naïve patients with incident Parkinson’s disease: the Norwegian ParkWest study

(2009) Kenn Freddy Pedersen et al.   JOURNAL OF NEUROLOGY

International study on the psychometric attributes of the Non-Motor Symptoms Scale in Parkinson disease

(2009) P. Martinez-Martin et al.   NEUROLOGY

Diagnosis and the premotor phase of Parkinson disease

(2009) E. Tolosa et al.   NEUROLOGY