By the way, here is the full article about BFS that Henry was quoting from. It goes a lot more into detail about how BFS is nothing like ALS. In fact, once I read it, it seems sort of silly that I have been worrying about this. ALS doesn't randomly just move all over your body!
The short version of this page is basically that if you walked into a neurologist's office with ALS, he would know it right off the bat. Once you got to the twitching stage, it would mean that muscle was already dead.
It's a very helpful read for anyone who is worried about this:
http://www.nextination.com/aboutbfs/...opic.php?t=200