I neglected to commented about your bilateral vs unilateral head sensitivity. You appear to be confusing headaches and jarring/movement sensitivity. Many have one without the other. Most issues with head sensitivity relates to bumps or movement. Whether unilateral headaches or bilateral headaches, I don't think it makes any difference. Many have headaches that change locations, often for no discernible reason. But, either way, you are trying to define differences that are meaningless in the big picture.