title: Prevalence and impact of migraine and tension-type headache in Korea.
abstract: OBJECTIVE
  The epidemiology and impact of headache disorders are only partially documented for Asian countries. We investigated the prevalence and impact of migraine and tension-type headache - which are the two most common primary headache disorders - in a Korean population.
  
  
  METHODS
  A stratified random population sample of Koreans older than 19 years was selected and evaluated using a 29-item, semistructured interview. The questionnaire was designed to classify headache types according to the criteria of the International Classification of Headache Disorders, second edition, including migraine and tension-type headache. The questionnaire also included items on basic demographics such as age, gender, geographical region, education level, and income, and the impact of headache on the participant.
  
  
  RESULTS
  Among the 1507 participants, the 1-year prevalence of all types of headaches was 61.4% (69.9% in women and 52.8% in men). The overall prevalence rates of migraine and tension-type headaches were 6.1% (9.2% in women and 2.9% in men) and 30.8% (29.3% in women and 32.2% in men), respectively. The prevalence of migraine peaked at the age of 40-49 years in women and 19-29 years in men. In contrast to migraine, the prevalence of tension-type headache was not influenced by either age or gender. Among individuals with migraine and tension-type headache, 31.5% and 7% reported being substantially or severely impacted by headache, respectively (Headache Impact Test score ≥56). Overall, 13.4% of all headache sufferers reported being either substantially or severely impacted by headache.
  
  
  CONCLUSIONS
  The 1-year prevalence rates of migraine and tension-type headache in the studied Korean population were 6.1% and 30.8%, respectively. One-third of migraineurs and some individuals with tension-type headache reported being either substantially or severely impacted by headache.
authors.affiliation: Department of Neurology, Eulji University School of Medicine, Seoul, Korea.
authors.forename: Byung-Kun
authors.initials: BK
authors.lastname: Kim
authors.forename: Min Kyung
authors.initials: MK
authors.lastname: Chu
authors.forename: Te Gyu
authors.initials: TG
authors.lastname: Lee
authors.forename: Jae-Moon
authors.initials: JM
authors.lastname: Kim
authors.forename: Chin-Sang
authors.initials: CS
authors.lastname: Chung
authors.forename: Kwang-Soo
authors.initials: KS
authors.lastname: Lee
keywords: epidemiology; headache; impact; migraine; prevalence; tension-type headache