Psychiatric symptoms in Parkinsonism.
D003072:Cognition Disorders / Q000209:etiology; D003863:Depression / Q000209:etiology*; D006801:Humans; D010300:Parkinson Disease / Q000150:complications*; D010301:Parkinson Disease, Postencephalitic / Q000150:complications*; D012189:Retrospective Studies; D012559:Schizophrenia / Q000209:etiology*