I am unsure what the official stance is regarding 'complex trauma' - whether it now 'exists' or 'doesn't exist' based on its inclusion / exclusion into/from the DSM 5. But the argument that it doesn't exist, as it is not an official diagnosis, is a little like the medieval worldview that Europe was just about the center of the universe as it was the sum total of the earth. Just because the other continents had not been discovered, it does not mean that they did not exist at the time. The territory had simply not been mapped.
But this is not the main point I want to make. The main point (clears throat), is that we are all still stuck with one 'diagnosis', namely PTSD, while many of us don't have PTSD. I know I don't. I wish the experts can sort the theory out so that we can start holding our breath for DSM 6 to include a separate diagnosis for complex trauma/early relational trauma/developmental trauma disorder. You see, my racial classification, or diagnosis, is that of European / PTSD, whereas in reality I'm Cherokee, or Pygmy, or Relationally Disordered (surely I can invent my own terms to refer to something that exists, but has not been named yet) and would really like to start existing alongside the British, Dutch, Italians, etc.
And now the main point (double clearing of throat) is - that in complex trauma or developmental trauma disorder, the wounds are, by definition, invisible, outside of conscious awareness - very much like the water the fish is unaware of. It can't be treated by EMDR, for example. But where conditions exist for early relational trauma / DTD, the chances are that traumatic incidents that will or could lead to PTSD will also take place. Double whammy for some people.
This seemingly random commentary was 'inspired' by the title of this thread; thinking about my own history, I realise that the 'ptsd bits' are easy to point out, while the 'complex trauma/relational' bits are too vague, the most important events took place before I was two and the impact is too diffuse, as well as pervasive, to present in a neat package.
I'm probably not expressing myself clearly, but I can see many people, especially in this thread, referring to the two distinct types of injury, and noting that the 'complex' type is experienced as more problematic.