Oh wow, read your post and I am so sorry to hear of all the problems you have going on. One thing I do know, it is very hard to be dx'd with MS. A friend of mine lives here in Tx and she started going blind. Her vision was so fuzzy that she was blind. It came and went and she never knew when it would hit. She went to every dr imaginable in Ft Worth and Dallas and no one could give a dx. Her mother lives in Florida and there is a big group thats treat MS patients. She went there and got dx'd with MS. They got her on medication and co-ordinate her care with a dr here now. She went almost a year trying to find out what was wrong.
As the one person posted, the lost of feeling in the last 3 fingers on your hand is the number sympton of nerve involvement in the cervical spine. The compressed nerve can & will cause this. If you had a compressed nerve in your lumbar spine you would have leg pain and could have loss of bladder control. An EMG on upper extremity can sometimes pick up cervical radiculopathy, however, they are not a very reliable test. I think they fall in the low 70% bracket for accuracy.
I do hope you can get some asnwers about these lesions and soon. Please keep us posted on how you are doing. Susie