Probability of Having Chronic Migraines

Chronic migraine, defined as having 15 or more headache days per month (with at least 8 being migraines) for 3 or more months, affects approximately 2% of the global population. In the United States, about 12% of the population (roughly 39 million people) has episodic migraines, and about 3-5% of migraine patients progress to chronic migraine each year.

Migraines are 2-3 times more common in women than men, likely due to hormonal factors. Risk factors for progression from episodic to chronic migraine include obesity, depression, anxiety, medication overuse (particularly opioids and barbiturates), caffeine overuse, sleep disorders, and stressful life events.

Chronic migraine is one of the most disabling neurological conditions. The World Health Organization ranks migraine as the second leading cause of years lived with disability. Treatment has been transformed by CGRP (calcitonin gene-related peptide) inhibitors, a new class of medications specifically designed for migraine prevention. Botox injections are FDA-approved for chronic migraine prevention. Other preventive approaches include beta-blockers, antidepressants, anticonvulsants, lifestyle modifications, and neuromodulation devices.