I've only read the first page of responses and thought I'd give what I've been through.
When I was in a severe depression, I was getting them very VERY often, nearly 5X a week, mostly rebounds. My neuro had me on Vicodin, Midrin, Maxalt, Ocpital nerve blocks and in the end Morphine patches. This was just before the revelation of botox for Migraines. I lived my life in a fog. It was horrendous.
Yes, I was addicted... I've since recovered. I have to be careful with my migraine regimines these days.
Currently I'm using Topomax, The first week I had panic attacks, and now I'm nearing my 3rd week, those have tapered off, and the headaches have as well. On the 2nd night of taking them, I got the MOST horrendous headache that I've had in 5 years, I was close to going to the ER, but Sleep, and a LOT of sleep took it away. Last week I had a migraine but it was nothing compared to what I've had in the past.
Next week will be the real challenge. It's the Monthly migraine. We'll see how it handles that one. Over all, I think I like Topomax. There are some studies out there that are beginning to link Seisures with Migraines... Who knows.