It makes me wonder if all of our immune systems don't, at some time or other, mistakenly 'screw' with our myelin. Maybe in us MS'ers it doesn't realize the job is done and just keeps going. There may be many things that our immune systems do that is "good", but may have some slight neuro degenerative consequences and with us it isn't slight.
You know how some people can eat until they are full and just stop and others can't. There are widely varying degrees of skinny to fat. Maybe our immune systems get stuck in some sort of viscious cycle while normal people just get the small amount of collateral damage (not enough to stand up and take notice) before their immune system quits.
I guess what I'm saying (rather poorly upon proofread) is that it's possilbe that everyone's immune system does some damage to their CNS, ours just doesn't know when to quit. Kind of like the prostate cancer thing. I've heard that if men could live to be 150 or so that we would all die of prostate cancer. It's just in some it happens before the rest of old age puts us down.
I'm sorry if that came off all discumbobulated, but I have a nasty head cold and that is when I definintely have that symptom where I can't find the right words. Hell, I can't even find THAT word right now