Who should I see to help me? I think I have MS

Here is My Question:
I am 69 years old and have been battling MS symptoms since the age of 27 starting with optic neuritis in one eye and the next 3 years later. Each decade I've had more problems. I'm unstable, and I fall a lot. Now I have seizures and am on medication for that as well as for tingling muscle spasms that happen all the time. I did not have an MRI until I was in my middle 50s and have had 5 more since. I have had a spinal which was clear. Every neurologist I have seen says the white matter and lesions are not in the right place for it to be multiple sclerosis. I am now down to a walker and wheel chair when needed. It is very difficult to walk at times, and the fatigue is awful. I try to stay active, but it is getting more difficult as each month passes. Please see if you can help with info I am missing or a different type of doctor. Thank you very much. Brenda in Houston, TX. 

Answer:
In Houston I would recommend George Hutton MD at Baylor (CLICK HERE)
In Dallas, my colleague, Darin Okuda MD (CLICK HERE) might be able to help.
 
Benjamin M. Greenberg, MD, MHS
Vice Chair of Translational Research and Ambulatory Care
Department of Neurology and Neurotherapeutics
Director, Transverse Myelitis, Neuromyelitis Optica Programs
Co-Director, Pediatric CONQUER Program
UT Southwestern Medical Center
Childrens Health
Dallas, Texas