I was diagnosed with MS in 2000 at the age of 58. My symptoms were numbness in my face, feet, and legs, an uncomfortable almost tickling sensation in my arms and legs, balance issues, and tripping on flat services. I also had frequent bouts with bladder infections most of my life. I also had bladder and sometimes bowel control issues. The Neurologist sent me for an MRI which showed several lesions on my brain. I did not have MRI's of my spine at that time. He also did a spinal tap, a nerve conduction test on my feet and legs, a test to rule out diabetes, and an ANA blood test. The ANA was negative, as was the diabetes study. The doctor, who was also working at a teaching hospital diagnosed me with MS based on the MRI and the other symptoms present. He also put me on a course of Methepredisone which relieved the current symptoms enough to get me back on my feet. He brought in several students from the hospital and I allowed them to look at all of my test, examine me and consider a diagnoses. They all concurred with the Neurologist without knowing what his diagnosis was. I was put on Copaxone at first, but had several relapses and decided on Rebif. Since starting on Rebif I have not had a full relapse for 7 years. I have to deal with heat intolerance, fatigue, and balance issues. I have severe Neuropathy in my feet and lower legs. I also have seronNegative RA, and moderate Fibromyalgia. I moved to another state 5 years ago and then returned which meant a new doctor because my doctor here had retired. My new Neurologist that I have had for 3 years re-diagnosed me because he had seen several of my previous doctors patients who were misdiagnosed with various neurological disorders. This Neurologist says that even though I have lesions on my brain and high levels from my spinal tap that those can be from my age. He further says that because I haven't any lesions on my spine and my ANA is negative that he can't give me a definitive diagnosis of MS. However, he is reluctant to take me off the Rebif. My question is should I see another Neurologist or just keep on the medication without a firm diagnosis? Will the Rebif do me any harm If indeed I don't have MS?