Nothing surprises me anymore about this disease.

I can get up but I have to stand there for a while until my legs decide to cooperate. I have to do that when I've been sitting, too. Can't just stand up and walk. It's almost like I have to stretch until my legs are "ready".
I'd keep track of when this happens so you can tell your Neuro. If you're like me as soon as I make an appointment the sx go away!