title: Letter: Methysergide and myoclonus.
mesh_terms: D000328:Adult; D001570:Benzodiazepinones / Q000627:therapeutic use*; D002722:Chlorobenzenes / Q000627:therapeutic use; D004691:Endarterectomy / Q000009:adverse effects; D005263:Femoral Artery / Q000601:surgery; D006801:Humans; D008297:Male; D008784:Methysergide / Q000008:administration & dosage / Q000009:adverse effects* / Q000627:therapeutic use; D009207:Myoclonus / Q000188:drug therapy* / Q000209:etiology; D009574:Nitro Compounds / Q000627:therapeutic use
chemical_list: D001570:Benzodiazepinones; D002722:Chlorobenzenes; D009574:Nitro Compounds; D008784:Methysergide