title: Treatment of dystonia with tetrahydrobiopterin.
mesh_terms: D000328:Adult; D000368:Aged; D001708:Biopterins / Q000031:analogs & derivatives / Q000627:therapeutic use*; D004421:Dystonia / Q000188:drug therapy*; D006801:Humans; D008875:Middle Aged; D011621:Pteridines / Q000627:therapeutic use*
chemical_list: D011621:Pteridines; D001708:Biopterins; C003402:sapropterin