Headache medicine research is a rapidly expanding discipline and many important advances in headache management have developed over the last 20 years. However, the revolution and evolution in headache medicine has remained limited largely to the developed countries. Indeed, there is an enormous need for further quality and capacity of headache care in most parts of the world. Thankfully, efforts to bridge this gap have begun. To date, training of practitioners in headache medicine is improving in the developing countries, country-specific epidemiological research is increasing, and new therapies are trickling slowly to the developing world. Part of the Frontiers in Headache Research series, this book brings the theme of a global campaign to the forefront. Researchers, scientists, and respected clinicians from around the world discuss aspects of access to care, individual and societal burden, and public health authorities address the problems of headache medicine as public health issues to hundreds of millions of headache sufferers worldwide.