Its a good idea for people to look into this further with their doctor's. I found out in the past year from my neurologist, who is also a migraine sufferer also, that Migraines pre-dispose you to stroke...or your chances are greater for stroke. Her sister had one. I don't know if there is a difference between a "migraine Stroke" and a regular stroke. So apparently anyone with migraines, or sever migraines has a greater chance. If you notice an increase or a change in your migraines you should look into it immediately. That's proabably why they are so willing to perscribe such potent medication so quickly and advise you to take it immediately.