AN UPDATE ON THE EPIDEMIOLOGY OF MIGRAINE

Epidemiologic studies provide estimates of the scope and distribution of the public health problems posed by migraine. These studies have be en facilitated by the development of the International Headache Societ y criteria for migraine, which have now been used in separate prevalen ce studies in several countries. In this article, we review some of th e methodological challenges in studying migraine epidemiology, report recent results from studies using IHS criteria, and suggest directions for future research.