My son started risperdal a month and a half ago and I have started noticing that is tongue has been going in and out of his mouth. His tongue does not go far past his lips but it is a unusual tongue movement that I have not seen him do before. I noticed it the other day and again tonight. He did it about a dozen times or so. He also has been covering up his mouth recently for long periods of time, i think he has been hiding this from me. I am a little scared as I heard that this med can cause this sort of tic that is not reversable!