Well, if the doctors are willing to call it
ALS with just LMN involvement, why not do the same for folks with just UMN involvment?
I really think there needs to be a distinction, though, because the differences between PLS,
ALS and PMA are pretty dramatic.
It is my personal, unprofessional opinion that if you have only UMN signs, you do not have
ALS. I'm just a piano tuner; what do I know?
PZ