2 months ago started to have debilitating headaches and neck pain. Went to physical therapy. Headaches have gone away, but neck pain continues. Pain is in upper part of neck and is a dull, nagging continuous pain. I experience dizziness, lightheadedness when standing or moving. When I read my face feels flush and get lightheaded. I also feel stiffness in my body. Don't know what to do. Any suggestions on what is going on.