I think it is real. I wondered at some points if I had it during the hardest times of working through my trauma. I do not have DID, but did feel I had several me's inside at different ages dealing with the traumas differently depending on the inside me's age. I hope this makes sense, it's the only way I can describe it right now.
So, even though I felt totally fragmented and seperated, using therapy I converged it all by the end.
Hope you get what I'm trying to say.
