title: Treatment of systemic mastocytosis.
mesh_terms: D002927:Cimetidine / Q000008:administration & dosage*; D004205:Cromolyn Sodium / Q000627:therapeutic use; D003533:Cyproheptadine / Q000008:administration & dosage; D004359:Drug Therapy, Combination; D006146:Guanidines / Q000008:administration & dosage*; D006634:Histamine H1 Antagonists / Q000008:administration & dosage*; D006801:Humans; D006919:Hydroxyzine / Q000008:administration & dosage; D008297:Male; D008875:Middle Aged; D014582:Urticaria Pigmentosa / Q000188:drug therapy*
chemical_list: D006146:Guanidines; D006634:Histamine H1 Antagonists; D003533:Cyproheptadine; D006919:Hydroxyzine; D002927:Cimetidine; D004205:Cromolyn Sodium