title: Opioid therapy and headache: a cause and a cure.
authors.forename: Richard B
authors.initials: RB
authors.lastname: Lipton
authors.forename: Marcelo E
authors.initials: ME
authors.lastname: Bigal
mesh_terms: D000701:Analgesics, Opioid / Q000009:adverse effects* / Q000627:therapeutic use*; D015331:Cohort Studies; D004363:Drug Utilization; D004630:Emergencies; D004636:Emergency Service, Hospital / Q000706:statistics & numerical data; D006261:Headache / Q000188:drug therapy*; D020773:Headache Disorders / Q000209:etiology* / Q000517:prevention & control; D006801:Humans; D008881:Migraine Disorders / Q000188:drug therapy; D009293:Opioid-Related Disorders / Q000150:complications; D016879:Salvage Therapy
chemical_list: D000701:Analgesics, Opioid