title: Psychiatric changes in patients treated with levodopa. I. The clinical experiment.
mesh_terms: D000203:Activities of Daily Living; D000275:Adjustment Disorders; D000368:Aged; D000639:Amitriptyline / Q000627:therapeutic use; D002986:Clinical Trials as Topic; D003975:Diazepam / Q000627:therapeutic use; D004295:Dihydroxyphenylalanine / Q000009:adverse effects / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D001523:Mental Disorders; D008875:Middle Aged; D009460:Neurologic Examination; D010300:Parkinson Disease / Q000188:drug therapy*; D010634:Phenobarbital / Q000627:therapeutic use; D011581:Psychological Tests; D011605:Psychoses, Substance-Induced; D014282:Trihexyphenidyl / Q000627:therapeutic use
chemical_list: D000639:Amitriptyline; D004295:Dihydroxyphenylalanine; D014282:Trihexyphenidyl; D003975:Diazepam; D010634:Phenobarbital