title: Ketotifen in the treatment of chronic cluster headache.
mesh_terms: D000328:Adult; D002908:Chronic Disease; D003027:Cluster Headache / Q000188:drug therapy*; D004334:Drug Administration Schedule; D006636:Histamine Release / Q000187:drug effects; D006801:Humans; D007665:Ketotifen / Q000008:administration & dosage / Q000627:therapeutic use*; D008297:Male; D008407:Mast Cells / Q000187:drug effects; D008875:Middle Aged; D014653:Vascular Headaches / Q000188:drug therapy*
chemical_list: D007665:Ketotifen