title: [Analgesic intervention for drug-resistant headaches: reflections on treating a case of cluster headache].
authors.forename: A
authors.initials: A
authors.lastname: Tejedor
authors.forename: J
authors.initials: J
authors.lastname: Pérez
authors.forename: L A
authors.initials: LA
authors.lastname: Moreno
mesh_terms: D000328:Adult; D000698:Analgesia; D003027:Cluster Headache / Q000188:drug therapy*; D004351:Drug Resistance; D006801:Humans; D008297:Male