In this video David Dodick, M.D., neurologist, Mayo Clinic in Arizona, explains the symptoms, triggers and treatment for complex migraines. A nationally recognized expert on headaches, Dr. Dodick is the president of the American Headache Society, Editor-in-Chief of Cephalalgia, Director and Founder of the Headache Program and Headache Fellowship Program at Mayo Clinic in Arizona. He is also the Medical Director of the Mayo Clinic Comprehensive Concussion Program.