Parkinson's disease.
D000547:Amantadine / Q000627:therapeutic use; D001590:Benztropine / Q000627:therapeutic use; D006801:Humans; D007980:Levodopa / Q000627:therapeutic use; D010300:Parkinson Disease / Q000188:drug therapy*; D011352:Procyclidine / Q000627:therapeutic use; D014282:Trihexyphenidyl / Q000627:therapeutic use
D001590:Benztropine; D007980:Levodopa; D014282:Trihexyphenidyl; D000547:Amantadine; D011352:Procyclidine