Migraines are pretty much the scourge of God. Those of you who have never had one, here's a pretty good description.
Think of the absolute worst headache you've ever had in your life, now take that and multiply it again and again and again, add lots of pressure to the point where you feel like you're head's going to explode. Then add in blurred vision and intense nausea; along with an assload of irritability. oh, and have all of that last for hours on end. That, my good fu-friends, is a migraine. I take a shot for them, but i'm out and have to go get my prescription filled sometime.
Just thought i'd shed some light on what a migraine is, some people i know think they have one but it's just a mild headache in comparison.