I had DID. I've been integrated for 5 years. I also have bipolar 1 disorder with psychosis and PTSD with psychosis. When I had parts, one was psychotic. She was the internalization of my schizophrenic parents and sister. It took a really astute psychiatrist to sort out all the psychotic episodes I was having. Some needed to be medicated and hospitalized to treat. Some required DID and trauma work in addition. Now that I'm integrated, all my psychotic episodes are much more straight forward. My psychiatrist knows what med combinations work in a crisis. Treating a psychotic part is complicated and can be risky. If you know you have a psychotic part your therapist must talk to your psychiatrist. Finding a psychiatrist that accepts a DID diagnosis isn't easy. My advice, let your therapist talk with him about it. You'll have a better result.