My hands were actually my first positiive visual symptom that something was wrong. The stiffness started in my middle finger ("not the flipper!" my doc said) and pretty soon my whole left hand is curled in a claw every morning when I wake up. After a couple hours I have to unroll my fingers over my knee while pressing my hand downward. It's incredibly painful, but only for a couple seconds. Then it goes back to the dull roar in my fingers. My hands swell and hurt and turn colors and definitely have a mind of their own as well. It's like they've seceded from the rest of me!
As for the twitching: my muscles twitch all the time, and constantly as I fall asleep. I think I even twitch in my sleep.