title: Prognosis of migraine and tension-type headache: a population-based follow-up study.
abstract: OBJECTIVE
  To determine the prognosis of migraine and tension-type headache and to identify prognostic factors.
  
  
  METHODS
  Of 740 persons (aged 25 to 64 years) examined in a 1989 Danish cross-sectional headache study, 673 were eligible for follow-up in 2001. All interviews at baseline and at follow-up were conducted by medical doctors and based on the 1988 IHS-criteria.
  
  
  RESULTS
  A total of 549 persons (81.6%) participated in the follow-up study. Of 64 migraineurs at baseline, 42% had experienced remission, 38% had low migraine frequency, and 20% had more than 14 migraine days per year (poor outcome) at follow-up. Poor outcome was associated with high migraine frequency at baseline and age at onset younger than 20 years. Among 146 subjects with frequent episodic tension-type headache and 15 with chronic tension-type headache at baseline, 45% experienced infrequent or no tension-type headache (remission), 39% had frequent episodic tension-type headache, and 16% experienced chronic tension-type headache (poor outcome) at follow-up. Poor outcome was associated with baseline chronic tension-type headache, coexisting migraine, not being married, and sleeping problems.
  
  
  CONCLUSIONS
  The prognosis of migraine, frequent episodic tension-type headache, and chronic tension-type headache was favorable.
authors.affiliation: Research Centre for Prevention and Health, Glostrup University Hospital, Nordre Ringvej 57, Building 84/85, DK-2600 Glostrup, Denmark. anchly01@glostruphosp.kbhamt.dk
authors.forename: Ann Christine
authors.initials: AC
authors.lastname: Lyngberg
authors.forename: Birthe Krogh
authors.initials: BK
authors.lastname: Rasmussen
authors.forename: Torben
authors.initials: T
authors.lastname: Jørgensen
authors.forename: Rigmor
authors.initials: R
authors.lastname: Jensen
mesh_terms: D000328:Adult; D017668:Age of Onset; D000368:Aged; D000700:Analgesics / Q000009:adverse effects; D015984:Causality; D015331:Cohort Studies; D015897:Comorbidity; D003430:Cross-Sectional Studies; D018450:Disease Progression; D005260:Female; D005500:Follow-Up Studies; D020773:Headache Disorders / Q000139:chemically induced / Q000175:diagnosis / Q000453:epidemiology; D006801:Humans; D008297:Male; D017533:Marital Status / Q000706:statistics & numerical data; D008875:Middle Aged; D008881:Migraine Disorders / Q000175:diagnosis* / Q000453:epidemiology* / Q000503:physiopathology; D011379:Prognosis; D012893:Sleep Wake Disorders / Q000453:epidemiology; D018781:Tension-Type Headache / Q000175:diagnosis* / Q000453:epidemiology* / Q000503:physiopathology
chemical_list: D000700:Analgesics