I've had these issues, the only medicine that didn't do this to me is lamictal . I am presently withdrawing from two medications and this sensation has returned.
In my opinion, it may be the Risperdal and Seroquel. They can cause motor restlessness such as dystonia and akathesia and of course the long term effect tardive dyskinesia. It can cause effects that appear to be psychiatric at times. If its akathesia or extra pyramidal side effects then your psychiatrist could titrate the anti-psychotics and add a side effect pill to control it. If its tardive dyskinesia such as I have, which can emerge in a variety of forms including tardive dystonia then they would switch you over to Clozaril immediately as it can be very dangerous in advanced forms (such as I have). Have your psychiatrist refer you to a movement disorders specialist for that. And of course realize that there are new medications in development (such as the one I'm on in Phase II clinical study, glycine) that won't cause this so its important to keep track of new medications as they come out:
http://www.psychmeds123.info/
I have never experienced that. My guess is that it is due to the medications that you are taking. I do not believe that bipolar disorder would cause that. Medications can have crazy side effects. You are on a lot of different meds so it might be hard to figure out which one - and they might be interacting with each other to cause that sensation. Talk to your doctor about it, he/she might be able to help you with that. I have been on Lamictal and Seroquel together and never experienced that, but everyone reacts differently. Good Luck!
Does anyone else have this?