hi rayray.
it depends really on the area or if you have more spasms in a certain place.
from the waist down my stiffness is the same on both sides but a arm or hand can have stiffness more when the other is ok.
also the jaw stiffness is independent from everywhere else.
i suppose the condensed answer is..........its can be a mixed bag of anywhere:roll:
I was diagnosed with bulbar PLS in 2006. I had no stiffness in any part of my body until my limbs started being affected in 2008. I had another EMG test in 2008 and there was LMN damage. I have been re-classified to a diagnosed of ALS. When my limbs started weakening that is when the stiffness started. The stiffness was throughout my entire body and remains so.