This seems to be occuring with my wife although I am so new to this I have no idea. I see her as borderline, she seems to be a textbook example of this..There was some sort of abuse in her past which seems to go hand in hand with all of these disorders...She has talked to us with a somewhat different voice in the past although often it is just her thoughts and ideas that seem to be from a different person. It is interesting that there are certain behaviors w/ borderline like putting on a facade and/or feeeling like a child that seem to coincide with DID...Does anyone have an idea how one would go about differentiating this sort of thing?