Thanks so much for your replies! It means a lot!

That is kinda what I thought.... Do you think that one lesion combined with two 'episodes' would be enough for a diagnosis - cos the name implies MULTIPLE lesions....
symptoms (briefly): two 'episodes' of migranious headaches for a period of time then progressive numbness through one side of my body (esp hand/arm). As well as some visual symptoms - halo effect around black on white writing, eyesight deteriorating (that returned) and lack of clarity in thinking, as well as much more.

Thank you once again for your support,
Am going out to buy B12 today