Una+ wrote:Don't pretend anything, just focus on reporting your symptoms.
This one sentence sums up completely what you should be spending the first session doing. If you think you are likely to over exaggerate or understate the symptoms, write them out on a page to hand over in the first session giving a few brief specific and prominent examples from your life. By having it written down you have a chance to make sure you don't over or under state the importance of any symptoms and you get to see if they can make a diagnosis. They won't be giving you a diagnosis of DID after the first session because they need to have actually seen you switch to confirm and make the diagnosis. It might take a few sessions before they will commit to a diagnosis.
I wrote out some of my symptoms and past trauma and just handed it to my T in the first session. It made the session flow a lot smoother... I'd definitely recommend writing some notes for them...