title: Palatal myoclonus responding to trihexyphenidyl.
mesh_terms: D004305:Dose-Response Relationship, Drug; D005260:Female; D006801:Humans; D008875:Middle Aged; D009132:Muscles / Q000294:innervation; D009207:Myoclonus / Q000188:drug therapy*; D010156:Palatal Muscles / Q000294:innervation; D014282:Trihexyphenidyl / Q000627:therapeutic use*
chemical_list: D014282:Trihexyphenidyl