First, the doc will probably run tests to determine what's the
cause of the migraine, esp if it's chronic and very severe. For
really extreme cases, a CT Scan might be ordered.
And yes, there's a cure... Cafegot. The pills actually containe
caffeine, which helps to constrict the dilated blood vessels in the
brain, thus reducing the pain.
I've got a colleague on it. She's also suffering from the side
effects, one of which is insomnia. 
