title: Parkinson's disease: one disease entity or many?
abstract: Although most neurologists accept that Parkinson's disease (PD) is a unique disorder, we still lack a valid diagnostic biological tool and therefore depend primarily on clinical examination in diagnosis. The distinction between PD and other parkinsonian syndromes is discussed.
authors.affiliation: Sackler Faculty of Medicine, Tel-Aviv University, Israel.
authors.forename: A D
authors.initials: AD
authors.lastname: Korczyn
mesh_terms: D003937:Diagnosis, Differential; D006801:Humans; D010300:Parkinson Disease / Q000175:diagnosis / Q000473:pathology*; D010302:Parkinson Disease, Secondary / Q000175:diagnosis / Q000473:pathology