Introduction and call to action / Stephen D. Silberstein and Richard B. Lipton -- Epidemiology, imact, and comorbidities of migraine headaches in the United States Richard B. Lipton and Lawrence C. Newman Migraine pathogenesis : neural and vascular mechanisms K. Michael Welch, F. Michael Cutter, and Peter J. Goadsby Heritability of migraine : highlights of the US Headache Consortium David B. Matchar Migraine classification, diagnostic criteria, and testing Randolph W. Evans and Jes Olesen Cluster and chronic daily headache David W. Dodick and Joel Saper Preventive treatment of migraine Stephen D. Silberstein and Fred G. Freitag Anticonvulsants in migraine prophylaxis Ninan T. Mathew, Joseph F. Hulihan, and John F. Rothrock Migraine in special populations Stephen D. Silberstein, David J. Capobiancop, and David W. Dodick Complementary and alternative treatments Kenneth A. Holroyd and Alexander Mauskop