Hi xRavenx. You should definitely let your psychiatrist know about your twitches and any other involuntary movements. I do suggest being a little bit more specific about what and where they are, as bpcyclist suggested. Again, definitely tell your psychiatrist, but the type and location of any twitches could make a difference in terms of concern. For example, as a kid and young woman (before any medications whatsoever) I used to have a frequent twitch below my eye (lower eyelid). I never knew what caused them, but they were not constant. Just occasional. They felt weird as hell, though. On the other hand, one time when I was taking a 1st generation antipsychotic, I had involuntary lip pursing. That was freaky and my psychiatrist quickly lowered that medication, and eventually took me off. That was a different category of involuntary movement, for sure.

I had pretty significant hand tremors the first time I took Lithium. That time, I was on 1,200 mg per day. I did complain about it, but it wasn't really worrisome, because I knew Lithium caused such things and my work wasn't affected. IOW, I wasn't a violinist, sharp shooter, or any other profession really requiring precision. Sure, my handwriting was very shaky looking, but I rarely hand write anything, anyway. I type everything, and that wasn't affected. Nevertheless, that psychiatrist had mentioned prescribing propranolol, but took me off Lithium instead. A few years later, I went back on Lithium at 900 mg per day. Coincidentally, I had been taking propranolol for something else. I did not have significant hand tremors that time.