In 2010, the FDA approved Botox for the treatment of chronic migraine headaches. In two multicenter studies in North America and Europe including 1,384 adults with migraine headache, Botox was demonstrated to significantly reduce the frequency of headache days.
Chronic migraine is defined as a neurological disorder where patients have a prior history of migraine and experience headaches on 15 or more days per month with headaches lasting four hours a day or longer. Botox is specifically approved for chronic migraine headache only.
Botox injections are given at multiple sites around the head and neck. Injections are given in intervals of every 3 months. The improvement in headache may vary and last up to 3 months or longer. There may be a reduction in the frequency or severity of headaches.
If you have tried multiple medications for migraine and still have not experienced significant pain relief, Botox injections may be an option.