 headache, migraine patterns. And interestingly enough, the thing that causes headaches and migraines and sciatica on the other end of the body and low back pain are all the same thing. The way the head is sitting on top of the neck. When the balance point between the head and neck is offset to one side or the other, the spine has to deal with it underneath that weight sitting on that one-ounce bone at the top of the neck.