I have osteonecrosis of the spine and thoracic outlet syndrome , I have 2 spinal stims,,,one in my thoracic spine and one on my occipital nerves, I ve had two spinal fusions at c5-c6 , this over 12 years,,,the back of my neck has been opened 8 times and is very stiff, lately I ve been having dizzy spells like crazy,,,can this be from my neck or high blood pressure?