I would also be worried if you have a
--encephalitis or meningitis. I think infection
will probably show up on a lumbar puncture. Had your doctor talked to you about getting an LP?
There are other causes of these symptoms, too, besides MS there's TIA (mini-stroke), vitamin B12 deficiency, pinched nerve autoimmune disorders (lupus, Sjogrens, etc.), migraines, and even an underactive thyroid.
I hope that your neuro will get to the bottom of this.