--multifocal motor neuropathy with conduction block (although, to be truthful, I've not heard of any autoimmune syndrome labelled multifocal motor neuropathy that did not involve conduction block--it's sort of characteristic, electromyographically, of the syndrome).

And, it would seem prudent to pursue immune modulating therapies if the syndrome has become noticably symptomatic, as early intervention seems to work better than later:

http://neuromuscular.wustl.edu/antib...imdem.html#mmn