yeah. it would be depersonalization.

i experience depersonalization and at times derealization outside of the DID but also within it...it depends. when i realize it is more the DID, i can feel one of the others usually in some way or another. also, depersonalization for me is more triggered by lack of sleep and stress which for me is different than when it's related to DID which is also triggered by those things but has more to it, like an actual trigger/reminder of a trauma or something or not feeling like i'm just myself where i will feel something from one of the others that isn't 'my' feeling...so things like that are what tell me it's not 'just' depersonalization on its own. it does get confusing though to sort out what is what at times since it also can overlap.