I suspect that migraines and creativity go together... when you are lying there in the dark with the brain short-circuiting and flashing, all sorts of thoughts and images get jumbled together. In the old days, when my computer crashed, all the lost chains were thrown into a file, text and jpgs together, and the program would helpfully save it in case something of value could be retrieved. The brain is a bit better than a computer at making associations between random events. A lot of us poets and artists are afflicted with migraines, but we can find some interesting bits among the wreckage. One thing I hate, though... lying there with a brilliant idea and being totally unable to do anything about it. :( Carolly