arm feeling like a dead-weight

hi all, just in work here at the moment and having one of those horrible silent episodes that no one else can see but i can feel! i have persistent problems with my left arm from from shoulder to elbow and my wrist and hand. my arm basically feels like it had a cement ball and chain attached! just waiting for it to pass whilst also still vibrating away inside (sensory problems)! does anyone else get this horrible dead weight feeling in their arm like it has a weight attached that's nailed o the floor?!
@Stumbler

@insomniacoffeelover , not in the arms, but in the legs. I don't get the internal vibrations, I get an intense burning feeling on the lower legs and feet. Mine gets worse when I over-do things....

@TracyD

@insomniacoffeelover I occasionally get the dead weight feeling along with the buzzing, and like you its my left arm. Since I had my Lemtrada treatment in May it's pretty much gone away now, however a couple of weekends back I completely over-did it while I was moving home and it came back with vengeance until I'd caught up with my rest. xx