Since Christmas Day, we’ve noticed some odd behavior from our seven year old son. When he is sitting, especially playing video games or watching tv, he starts doing the following. Tongue moving around mouth constantly, wiping hands on clothes and waving his arm in the air. He doesn’t seem to notice he’s doing it? If we ask what he’s doing he just says he doesn’t know and goes quiet. Trying not to make a big deal of it. Otherwise seems fine, no social or school concerns. Could he be overstimulated?