Jannie, I don't mean to make you nervous, but I did want to share our experience because my husband and I were convinced that our son's movements were tics. When we found out they were from Risperdal, we felt really terrible that he had suffered for nearly a month (and he got a nasty staph infection all over his face from constant lip licking).
We're not doctors and can't diagnosis over the internet. None of us can say whether it's a dystonic reaction or not. That's why I urged you to have a doctor observe your son to determine what's going on.
I honestly don't know about the timing of these movement disorders, but I'll google and see what I come up with.
