title: [The pathophysiological foundations of the psychiatric disorders in Parkinson's disease].
abstract: BACKGROUND
  In recent years, the non-motor symptoms of Parkinson's disease, including those of a psychiatric nature, have been receiving greater attention from the scientific community.
  
  
  METHODS
  In this paper we analyse the pathophysiological bases underlying the different psychiatric symptoms, examining the dopaminergic and non-dopaminergic mechanisms involved, as well as the importance of the extranigral disorders that are produced from the onset of the disease.
authors.affiliation: Servicio de Neurología, Complejo Hospitalario de Ourense, Ourense, Spain. ryanezb@telefonica.net
authors.forename: R M
authors.initials: RM
authors.lastname: Yáñez-Baña
mesh_terms: D001921:Brain / Q000033:anatomy & histology / Q000502:physiology; D015897:Comorbidity; D004298:Dopamine / Q000378:metabolism; D006801:Humans; D001523:Mental Disorders / Q000503:physiopathology*; D009483:Neuropsychological Tests; D010300:Parkinson Disease / Q000503:physiopathology*; D012701:Serotonin / Q000378:metabolism
chemical_list: D012701:Serotonin; D004298:Dopamine