our son is almost 6 and we just started meds about a month ago. He started on Ritalin and he got a really pronounced eye twitch after about 2 weeks, then we switched to Adderall and he cried and was sad for about 2 hours of each day, then we tried Dexadrine, which is when he started twitching his eyes, raising his eyebrows and shoulders and constantly toching his head. We are now on the 9th day of a trial with Tenex and he is still twitching. My doctor told me that some children can not tolerate stimulants because they can cause tics for some. Trust your instincts, if your son is doing it a lot at all different times, you should absolutely tell your doctor. The tics are really freaking us out. Hope your get resolved.