Migraine is a common disabling brain disorder. Headache accounts for 4.4% of all consultations in general practice approximately
5% of all medical admissions to hospital, and approximately 20% of neurology outpatient consultations. Migraine affects over 20%
of people at some point in their lives; epidemiological studies have shown that 4.5% of the population of Western Europe has
headache on at least 15 days per month; global studies suggest that approximately 1% of the world’s population may have chronic
migraine. Chronic migraine imposes a substantial economic burden on society.
