Fearnley JM, Lees AJ (1991) Ageing and Parkinson’s disease: substantia nigra regional selectivity. Brain 114:2283–2301
PubMed
Article
Google Scholar
Hawkes CH (2008) The prodromal phase of sporadic Parkinson’s disease: does it exist and if so how long is it? Mov Disord 23:1799–1807
PubMed
Article
Google Scholar
Tolosa E, Gaig C, Santamaría J, Compta Y (2009) Diagnosis and the premotor phase of Parkinson disease. Neurology 72(suppl 7):S12–S20
PubMed
Article
Google Scholar
Vingerhoets FJ, Snow BJ, Lee CS, Schulzer M, Mak E, Calne DB (1994) Longitudinal fluorodopa positron emission tomographic studies of the evolution of idiopathic parkinsonism. Ann Neurol 36:759–764
PubMed
CAS
Article
Google Scholar
Marek K, Jennings D (2009) Can we image premotor Parkinson disease? Neurology 72(suppl 7):S21–S26
PubMed
Article
Google Scholar
Gaenslen A, Swid I, Liepelt-Scarfone I, Godau J, Berg D (2011) The patients’ perception of prodromal symptoms before the initial diagnosis of Parkinson’s disease. Mov Disord 26:653–658
PubMed
Article
Google Scholar
Lang AE (2011) A critical appraisal of the premotor symptoms of Parkinson’s disease: potential usefulness in early diagnosis and design of neuroprotective trials. Mov Disord 26:775–783
PubMed
Article
Google Scholar
Stern MB, Siderowf A (2010) Parkinson’s at risk syndrome: can Parkinson’s disease be predicted? Mov Disord 25(suppl 1):S89–S93
PubMed
Article
Google Scholar
Postuma RB, Gagnon JF, Vendette M, Desjardins C, Montplaisir JY (2011) Olfaction and color vision identify impending neurodegeneration in rapid eye movement sleep behavior disorder. Ann Neurol 69:811–818
PubMed
Article
Google Scholar
Gonera EG, van’t Hof M, Berger HJ, van Weel C, Horstink MW (1997) Symptoms and duration of the prodromal phase in Parkinson’s disease. Mov Disord 12:871–876
PubMed
CAS
Article
Google Scholar
Olsen JH, Friis S, Frederiksen K (2006) Malignant melanoma and other types of cancer preceding Parkinson disease. Epidemiology 17:582–587
PubMed
Article
Google Scholar
Berg D, Godau J, Walter U (2008) Transcranial sonography in movement disorders. Lancet Neurol 7:1044–1055
PubMed
Article
Google Scholar
Berg D, Behnke S, Seppi K et al (2013) Enlarged hyperechogenic substantia nigra as a risk marker for Parkinson’s disease. Mov Disord 28:216–219
PubMed
CAS
Article
Google Scholar
Busse K, Heilmann R, Kleinschmidt S et al (2012) Value of combined midbrain sonography, olfactory and motor function assessment in the differential diagnosis of early Parkinson’s disease. J Neurol Neurosurg Psychiatry 83:441–447
PubMed
Article
Google Scholar
Iranzo A, Lomeña F, Stockner H et al (2010) Decreased striatal dopamine transporter uptake and substantia nigra hyperechogenicity as risk markers of synucleinopathy in patients with idiopathic rapid-eye-movement sleep behaviour disorder: a prospective study. Lancet Neurol 9:1070–1077
PubMed
CAS
Article
Google Scholar
Siderowf A, Jennings D, Eberly S et al (2012) Impaired olfaction and other prodromal features in the Parkinson At-Risk Syndrome Study. Mov Disord 27:406–412
PubMed
Article
Google Scholar
Postuma RB, Lang AE, Gagnon JF, Pelletier A, Montplaisir JY (2012) How does parkinsonism start? Prodromal parkinsonism motor changes in idiopathic REM sleep behaviour disorder. Brain 135:1860–1870
PubMed
CAS
Article
Google Scholar
Winkler J, Ehret R, Büttner T et al (2011) Parkinson’s disease risk score: moving to a premotor diagnosis. J Neurol 258(suppl 2):S311–S315
PubMed
Article
Google Scholar
Berg D, Marek K, Ross GW, Poewe W (2012) Defining at-risk populations for Parkinson’s disease: lessons from ongoing studies. Mov Disord 27:656–665
PubMed
Article
Google Scholar
Meara J, Bhowmick BK, Hobson P (1999) Accuracy of diagnosis in patients with presumed Parkinson’s disease. Age Ageing 28:99–102
PubMed
CAS
Article
Google Scholar
Fahn S, Elton RL, Members of the UPDRS Development Committee (1987) Unified Parkinson’s disease rating scale. In: Fahn S, Marsden CD, Goldstein M, Calne DB (eds) Recent developments in Parkinson’s disease II, 1st edn. Macmillan, New York, pp 153–163
Google Scholar
Longstreth GF, Thompson WG, Chey WD, Houghton LA, Mearin F, Spiller RC (2006) Functional bowel disorders. Gastroenterology 130:1480–1491
PubMed
Article
Google Scholar
Nègre-Pagès L, Regragui W, Bouhassira D, Grandjean H, Rascol O, DoPaMiP Study Group (2008) Chronic pain in Parkinson’s disease: the cross-sectional French DoPaMiP survey. Mov Disord 23:1361–1369
PubMed
Article
Google Scholar
Chaudhuri KR, Martinez-Martin P, Schapira AH et al (2006) International multicenter pilot study of the first comprehensive self-completed nonmotor symptoms questionnaire for Parkinson’s disease: the NMSQuest study. Mov Disord 21:916–923
PubMed
Article
Google Scholar
Schrag A, Barone P, Brown RG et al (2007) Depression rating scales in Parkinson’s disease: critique and recommendations. Mov Disord 22:1077–1092
PubMed
Article
Google Scholar
Lubeck DP, Prebil LA, Peeples P, Brown JS (1999) A health related quality of life measure for use in patients with urge urinary incontinence: a validation study. Qual Life Res 8:337–344
PubMed
CAS
Article
Google Scholar
Hummel T, Konnerth CG, Rosenheim K, Kobal G (2001) Screening of olfactory function with a four-minute odor identification test: reliability, normative data, and investigations in patients with olfactory loss. Ann Otol Rhinol Laryngol 110:976–981
PubMed
CAS
Google Scholar
Walter U (2013) How to measure substantia nigra hyperechogenicity in Parkinson disease: detailed guide with video. J Ultrasound Med 32:1837–1843
PubMed
Article
Google Scholar
Flohil SC, de Vries E, Neumann HA, Coebergh JW, Nijsten T (2011) Incidence, prevalence and future trends of primary basal cell carcinoma in the Netherlands. Acta Derm Venereol 91:24–30
PubMed
Google Scholar
Husmann G, Kaatsch P, Katalinic A, Bertz J, Haberland J, Kraywinkel K, Wolf U (2010) Malignant melanoma of the skin. In: Robert Koch Institute and Association of Population-based Cancer Registries in Germany (ed) Cancer in Germany 2005/2006. Incidence and trends. Robert Koch-Institut, Berlin, pp 52–55
Google Scholar
Haehner A, Hummel T, Hummel C, Sommer U, Junghanns S, Reichmann H (2007) Olfactory loss may be a first sign of idiopathic Parkinson’s disease. Mov Disord 22:839–842
PubMed
Article
Google Scholar
Ross GW, Petrovitch H, Abbott RD et al (2008) Association of olfactory dysfunction with risk for future Parkinson’s disease. Ann Neurol 63:167–173
PubMed
Article
Google Scholar
Iwanami M, Miyamoto T, Miyamoto M, Hirata K, Takada E (2010) Relevance of substantia nigra hyperechogenicity and reduced odor identification in idiopathic REM sleep behavior disorder. Sleep Med 11:361–365
PubMed
Article
Google Scholar
Müller B, Larsen JP, Wentzel-Larsen T, Skeie GO, Tysnes OB, Parkwest Study Group (2011) Autonomic and sensory symptoms and signs in incident, untreated Parkinson’s disease: frequent but mild. Mov Disord 26:65–72
PubMed
Article
Google Scholar
de Lau LM, Koudstaal PJ, Hofman A, Breteler MM (2006) Subjective complaints precede Parkinson disease: the Rotterdam study. Arch Neurol 63:362–365
PubMed
Article
Google Scholar
Liu R, Gao X, Lu Y, Chen H (2011) Meta-analysis of the relationship between Parkinson disease and melanoma. Neurology 76:2002–2009
PubMed
Article
Google Scholar
Stamey W, Davidson A, Jankovic J (2008) Shoulder pain: a presenting symptom of Parkinson disease. J Clin Rheumatol 14:253–254
PubMed
Article
Google Scholar
Farnikova K, Krobot A, Kanovsky P (2012) Musculoskeletal problems as an initial manifestation of Parkinson’s disease: a retrospective study. J Neurol Sci 319:102–104
PubMed
Article
Google Scholar
Leentjens AF, Van den Akker M, Metsemakers JF, Lousberg R, Verhey FR (2003) Higher incidence of depression preceding the onset of Parkinson’s disease: a register study. Mov Disord 18:414–418
PubMed
Article
Google Scholar
Politis M, Wu K, Molloy S, Bain PG, Chaudhuri KR, Piccini P (2010) Parkinson’s disease symptoms: the patient’s perspective. Mov Disord 25:1646–1651
PubMed
Article
Google Scholar
Paisán-Ruiz C, Houlden H (2010) Common pathogenic pathways in melanoma and Parkinson disease. Neurology 75:1653–1655
PubMed
Article
Google Scholar
Diederich NJ, Pieri V, Hipp G, Rufra O, Blyth S, Vaillant M (2010) Discriminative power of different nonmotor signs in early Parkinson’s disease. A case-control study. Mov Disord 25:882–887
Google Scholar