FDA Approves Botox to Treat Chronic Migraines http://www.webmd.com/migraines-headache ... -migraines FDA Approves Botox to Treat Chronic Migraines FDA Approves Botox to Treat Chronic Migraines FDA Approves Botox to Treat Chronic Migraines chronic migraine headaches has now approved Botox injections for migraines WebMD FDA Approves Botox to Treat Chronic Migraines