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Keywords:

  • Epidemiology;
  • headache

Reliable data regarding prevalence of headache, in general, and migraine, in particular, remain elusive. Methodological inconsistencies and inadequacies are largely responsible. The present study uses a random sampling technique to assess the prevalence of very severe headache. Estimates of headache prevalence were obtained for two time periods: indeterminatelifetime and the past three months. The resulting prevalence estimates were 20.4 and 15.2%, respectively, for women, and 11.2 and 8.8%, respectively, for men. The estimates are compared with those of previous studies. The present study is compared with these previous studies and suggestions are offered for future research. Aspects of the treatment experience of respondents with poorly controlled headache are also addressed.