That's part of what happened to me on the drug I was on over the summer. It's part of EPS and you need to let your pdoc know it is happening. There are meds to help it (cogentin is most common. I also used valium this summer, especially when I first had the problem because it was painful until the cogentin built-up. I didn't recognize what it was and kept making excuses "I've been hunched over the sewing machine." "I slept funny". "The dog must have really pulled on his walk" etc. so it went on for weeks and got pretty bad). You shouldn't let it go on without the pdoc knowing because in rare cases it can turn into tardive dyskinesia which is permanent.

I had this on Geodon although the biggest symptom I had was uncontrollable oral motor movements. I wound up stopping it at the time (because we had no idea I'd have trouble with every AAP except Seroquel and that we couldn't "waste" them) but with the meds it can be controlled.