Thank you everyone. I am hoping that perhaps this muscle spasm is only due to exercise or other causes that are temporary. I've only experienced this for a few days, although it has gotten worse today. I'm still anxious and concerned, but your comments have helped me feel a little bit better. I do not want to think the worse possible scenario, but I was feeling that way 100% earlier. Hopefully this will go away on its own, although I will definitely talk to my pdoc about it. I hope I do not have to stop taking Latuda, since I have not had other side effects. It helped lift a really bad mixed episode that I had, although I'm still finding my way.