title: Menstrual and nonmenstrual migraines differ in women with menstrually-related migraine.
abstract: BACKGROUND
  We compared migraine features and acute therapy response in menstrually-related migraines (MRMs) and non-menstrually-related migraines (NMRMs).
  
  
  METHODS
  Women with frequent, disabling migraines were prospectively diagnosed with MRM according to the International Classification of Headache Disorders (ICHD-II; N = 107) criteria using a daily electronic headache dairy. Participants received individualized acute therapy while free of prophylactic migraine medications.
  
  
  RESULTS
  Repeated measures logistic regression revealed MRMs were longer (23.4 vs. 16.1 hours, odds ratio [OR] = 1.01, confidence interval [CI] 1.01, 1.02) and more likely associated with disability (85.6% vs. 75.6%, OR = 1.82, CI 1.27, 2.58) than NMRMs. MRMs were also less responsive to acute therapy (two-hour pain-free response = 6.7% vs. 13.4%, OR = .45, CI .26, .80) and reoccurred more frequently within 24 hours after a four-hour pain-free response (36.0% vs. 19.6%, OR = 2.12, CI 1.27, 3.53) than NMRMs.
  
  
  CONCLUSIONS
  These results support the proposed ICHD-II classification of MRMs and suggest that MRMs may require a treatment approach different from that for NMRMs.
authors.affiliation: Ohio University, Ohio, USA. mpinkerman@hotmail.com
authors.forename: Brenda
authors.initials: B
authors.lastname: Pinkerman
authors.forename: Kenneth
authors.initials: K
authors.lastname: Holroyd
mesh_terms: D000328:Adult; D000700:Analgesics / Q000627:therapeutic use; D005260:Female; D006801:Humans; D008597:Menstrual Cycle / Q000502:physiology*; D008881:Migraine Disorders / Q000145:classification* / Q000209:etiology* / Q000503:physiopathology; D011293:Premenstrual Syndrome / Q000150:complications / Q000188:drug therapy / Q000503:physiopathology; D016896:Treatment Outcome
chemical_list: D000700:Analgesics