I have arthritis in my cervical spine. In the past week, I have one area in particular that is very painful, it feels bruised to the touch but I did not injure it in any way that would actually cause a bruise. When I sit with my head resting against the back of a chair, sofa, etc., when I get up, my neck is so painful I can hardly move it. Is this just swelling from the arthritis or something more specific?