Long lasting headaches and Botox injections - is this a reaction?
I have done thousands and thousands of Botox injections and many of those were for people with poorly controlled migraines. It almost always works great for that. I have had two people, who like you, had headaches that lasted for a month. It might be worthwhile to try Botox or maybe Dysport again to see if it was just an unusual reaction but if you get the headaches again, I would stay away from neurotoxins.
Dr. Ken Stein