Answered by Lisa Mannix, MD, Headache Associates, West Chester, OH

Answered by James W. Banks, MD, Ryan Headache Center, St. Louis, MO

Answered by James W. Banks, MD, Ryan Headache Center, St. Louis, MO

Answered by George Urban, MD, Diamond Headache Clinic, Chicago, IL

Answered by Susan M. Rubin, MD, NorthShore University HealthSystem, Glenview, IL

Answered by Richard Wenzel, PharmD, Diamond Headache Clinic, Chicago, IL

Answered by Lisa Mannix, MD, Headache Associates, West Chester, OH

Answered by George R. Nissan, DO, Co-Director, Diamond Headache Clinic, Chicago, IL

Answered by Doug Mann, MD, UNC Professor of Neurology, Chapel Hill, NC