I often have lots of intensely active and disturbing dreams, but I also have some strange 'episodes', for lack of a better word. I've had them a few times per year since I was about eight. Essentially what I experience is a belief that there is no tomorrow or that I am entirely alone, as in nobody else exists. I often also believe that there is no moment outside of the present, if that makes sense. I have developed some good self-talk for these moments, so I don't panic as much as when I was a child. And these methods keep me calm, but I have trouble making myself actually believe my self-talk. During the most recent one I experienced, there were two streams of thought occuring at the same time, one talking over the top of the other. One of them was my own self-talk, which was the quieter one. The other one was a mixture of fear and noise and other negative things. And although these mainly occur in the night, upon waking, I have experienced them during the day a couple of times.

Does anyone have any idea what this is?