Hi again,

do you know if it's possible to have the conduction blocks, which showed during my EMG, with anything else than MMN? Maybe with some kind of nerve block in my neck?

I am asking because I wonder if there is a point to make the flexion/extension MRI, which is scheduled for me soon. I'm in a huge stress, as I was denied IVIg treatment (because of insurance issues and bureaucracy here) and I have to look for help abroad and quickly, so I don't really have the time for that MRI - I would have to go to another city to have that done etc, too much ado and maybe not necessary.

--to have conduction block with other conditions than multifocal motor neuropathy; in motor neuropathy the conduction block is normally due to a focal demyelination caused by an autoimmune situation, but anything that demyelinates an area of nerve, or breaks enough of the axon, can cause it--most notably local swelling/ischemia due to traumatic injury.

I'd be willing to wager, given how infrequently diagnosed multifocal motor neuropathy is, most instances of conduction block on EMG are due to injury--either sudden or long term from compressive forces in the spine from disc herniation or osteophytic overgrowth.

Hmm I cannot cancel my hotel booking anyway, so maybe Ill just do that special MRI once I have a chance, and I had to fight to get the referral, so.. leave no stone unturned ..