I hope you have mentioned this to your therapist. I take medication that seems to work except when I spend too much time alone. When I spend too much time by myself, like a few days without talking with someone, I start to loose a sense of being real. I always switch. I switch depending on who I am with, where I am and what it is I am doing. But when I do switch in these situations I have a focus. When I am home alone for too long I don't have a particular focus. So my switching just flows with the conversation in my head. If this goes on for too long I start to feel unreal, like I am not connected to the world. This feeling creates anxiety. Eventually I will make the effort to get out of the house even if it is just to take a walk. It's a scary feeling. Before my diagnosis I thought I was going insane. That I was loosing my mind. It helps to know that this feeling of being unreal is part of my diagnosis. It helps me to believe that I am not loosing my mind. I hope you start feeling better.