Chronic migraine is the most severe form of migraine. 1-2% of the population suffer form chronic migraines. If you have headaches for more than 15 days of the month for 3 consecutive months, 8 or more of which are migraines. Other day can be “tension type” headaches; but as the severity of headache varies with chronic migraines. It is best to discuss with one of our trained nurses to determine if Botox for migraines is the best treatment for you.