The American Headache Society is accredited by the Accreditation Council for Continuing Medical Education (ACCME) to sponsor CME for physicians. AHS takes full responsibility for the content, quality and scientific integrity of this CME activity. AHS designates each issue as a medical education activity for a maximum of one hour in Category I credit toward the American Medical Association (AMA) Physician’s Recognition Award. Each physician should claim only those hours of credit that he/she actually spent in the educational activity.

Although every effort has been made to ensure that drug doses and other information are presented accurately in this publication, the ultimate responsibility rests with the treating physician. The publishers, the American Headache Society nor the authors can be held responsible for any consequences arising from the use of information contained herein. Any product mentioned in this publication should be used in accordance with the prescribing information prepared by the manufacturers.