If you have ever had one, I can tell you they are painful - much like having a jackhammer pounding away at your head. You want to crawl into a very dark quiet place, and hide until the pain subsides. You can sometimes experience auras or see stars much like tiny fireworks - which I represented in the background.
I united all the physical elements of a migraine within this image, including a cracking walnut. I felt it had the same texture as a brain, but it was less literal in representation of migraine pain.
The drawing is in ink, watercolour, digital layering and photography.