I occasionally have this frightening experience during sleeping.
I have a dream/nightmare that doesn't have scary subject matter, but my brain loses its sense of normality, and this continues when I awaken.
It is hard to put into words, because they really do not make sense.
One time it was as though life and consciousness was a sort of elaborate maths problem, and every time i turned or twisted it added complexity to this problem that my brain was amidst. I cannot escape this increasingly confused state. My mind cannot remember what the normal state is.
A different one, last night: the twisted state of mind was depicting the function of lying down and sleeping as some sort of strange competition, my mind forgets that sleep just involves lying there, and my mind is full of confusion.
The bizarre states of mind continues as I am fully awake, I have to struggle to try remember what normality is. The more I think, the more confused the thoughts become.
It is truly a horrible place to be in, and seems to be an insight into the mind of a psychotic person. A slight panic worsens the situation.
It is hard to come back to reality while being alone in a room, so I often go to some social website online to try bring my mind back to reality. I eventually go back to sleep and will be back to normal in the morning.
I am curious to why such things would occur though. It happens irregularly, maybe every few weeks or months or sometimes less.
I am young, healthy, not under any trauma, and take drugs rarely. I believe I did have some night-terror episodes when i was a younger child. But these were ones when you were not conscious.