Conventional management and novel modalities for improved treatment of chronic migraine

Abstract

Over the past decade, there has been remarkable progress in our understanding of chronic migraine (CM) and its classification, diagnosis, epidemiology, pathophysiology, and treatment. CM is one of the most disabling of the primary headache disorders and an enormous challenge in neurologic and headache practice. This supplement, focused on that progress, is based on the symposium, Conventional Management and Novel Modalities for Improved Treatment of Chronic Migraine, held at the American Headache Society Annual Scientific Meeting in June 2008. CM is now recognized as one of 4 types of primary chronic daily headache (CDH) of long duration, a syndrome defined by primary headaches 15 or more days per month for at least 3 months with attacks that last 4 hours or more per day on average.1,2 The other forms of CDH of long duration include chronic tension-type headache, new daily persistent headache, and hemicrania continua. With the exception of chronic tension-type headache, these disorders were new additions to the second edition of the International Classification of Headache Disorders …