Deb, a good MS spec Neuro, worth his salt, doesn't need explanations of sx...He knows from the lesion placements on your MRIs and the other tests he/she preforms. Telling them how and what you feel, should just be icing on the cake, if they know what they're doing.
If there are no lesions and no protien in your spinal fluid, well, they are scientists, soooooo, it must be stress, anxiety, histeria or hypochondria.
Hang in there and be sure they treat your SX with appropriate meds..