I've had a bit of that--like being out of my body, like I can't feel I have a body--and also feeling myself being pulled away from myself. I have bipolar and generalized anxiety disorder. The first time it happened I called my therapist. Now I just know it will pass with time if I relax.
I do think someone with symptoms like these and the ones mentioned need to be told to a doctor. I'm not sure what it warrants in terms of diagnosis, but I think it could be treated. The symptoms are not fun at all!