Chronic migraine is defined as headache on 15 or more days a month for at least three months having the features of migraine headache on at least 8 days of month (1). Individuals with chronic migraine often experience migraines that are more severe and longer lasting even with medication (3). Chronic migraine poses a greater impact on the patient’s life than episodic migraine, including lower household income levels, less ability to do chores, and more missed workdays (4). Migraine is the 3rd most common medical problem in the world (5) and the 7th most disabling of all medical conditions (5,6).