My mother has chronic migraines that sometimes last for months. The pain originates from the back of her cranium and moves to her jaw and face. She often goes to sleep fine and wakes up with a migraine. This has been getting progressively worse for the last 20 years. She has seen every type of doctor imaginable and nobody has found anything. I know my mom isn't crazy and definitely isn't a liar, but nobody has ever had any idea what is wrong with her. I was wondering if anybody might know of something uncommon that could cause this.