Okay... just my perspective here... and I'm bats*** crazy so take this with a grain of sale, eh?
I have been dx'd with psychosis nos before. I also have had several 'little' breakdowns over the years and one major burnout episode several years ago that I never have fully recovered from. All of this kinda stuff is all directly related to stress for me. It never is, does the breakdown or burnout cause me to have psychotic episodes... it's more like how bad will it get before I can properly deal with the stress in my life. If I cannot, for whatever reason, deal with the stress, the breakdown or burnout will eventually lead to some kind of psychosis type event for me... but it's not the fault of the breakdown or burnout, it's the stress. Make sense? For me to say the burnout caused the psychosis, is like blaming the cough for causing the runny nose when what I really have is a head cold. But they can, for me, follow a pattern that I know I need to stop before shtf for me.
For me, the times I have had psychotic like episodes, I do hallucinate (visual and auditory). The last time I had a lil psychotic episode, I had the nicest conversation with these imaginary purple bubbles I was seeing everywhere. They kept telling me I was crazy and I kept telling them how that was a funny thing for a hallucination to say and how their lack of being real kinda took away their street cred. Heh. Eventually the bubbles and I came to an understanding. It seemed only fair that they called me crazy since I was blatantly disregarding their existence. *shrugs* I have yet to have a full blown psychotic episode where I could not, for example, understand that the bubbles were not just a me thing. I have yet to lose touch with reality on that kinda scale.
I also have weird racing thoughts or disjointed thoughts... I dunno how to explain it. My brain just does not want to work right and it fails to work in a really fast kinda way. Some of my thoughts could be funny, violent, irrational, just all over the place in a way that will make sense to no one except me. They are just not based in reality.
I'm sure I have other things happen, but those seem to be the most predominant type of symptoms for me. It has been a few years since I had anything like that go down so I'm a lil too far removed from it to have good recall.
Anyway, I hope that helped or at least made sense.
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"...don't ask me why it's just the nature of my groove..."