I think this could be common to a lot of things.
I do near the same thing, but with only thoughts - not actual events - so mine is more catastrophic thinking.
DID being a conglomerate of coping modalities, nothing would surprise me to be incorporated in to it since DID is unique to each individual.
Well, sometimes I do feel like i'm being watched.... but I likely am not.
I got my self into a right state tonight in the kitchen - I seem to have a kitchen phobia. The dishes were piled high in the sink and I've been not just avoiding them, but also really ill these last two weeks. Finally I go to tackle them tonight and there's a spider in there! That set everything off and I was "off the maps" in my imagination of DHS coming in and condemning my place, saying I wasn't well enough to live on my own.... etc. I was so worked up that I had to take an Ativan (and this wasn't even a real scenario) and then several fireworks went off right outside my window scaring the daylights out of me!!!! I would have been ok had I not already taken a little mind trip in to scary waters.
:/