I m 65, have MS but somewhat ambulatory, may not have MS because neurologists now think MRIs show more of an ischemic disease than traditional MS. But beginning in September of 2017, I develop headaches accompanied with dizziness and nausea. A CAT scan in September showed some abnormality but can t remember exactly what it was. I feel sick to my stomach, have no energy, my head feels pressure all over, sort of like the flu, but not the flu. Everything else is under control - blood pressure ok, cholesterol ok, overweight, thyroid under control. Just feel sick....any idea what s going on?