What Psychiatry calls "psychosis" is a symptom of "social defeat"
Psychiatry is a pseudo-science and a cult that observes human will being "disturbed". The thing with will is that it can only be disturbed by someone else's will, there is a cause and effect that has to do with competition between different people each with their own agency/agenda. A technical term for human will is the concept of executive function, defined by Pribram in 1973. Likewise, disturbed executive function, can be defined as executive disorder. A consequence of disturbed will, or, executive disorder, is that the ability to organize ideas is impaired, planning, overall, is disturbed by whoever or whatever is imposing their will on the person. This can also, secondarily, cause impairment of the "idea system" of the brain, so called mental disorder, or, memetic disorder (Leigh, 2010), that might cause the symptom known as meme illness (Leigh, 2010), or, mental illness.
Psychiatry, the pseudo-science, tends to assume that mental disorder causes executive disorder, but, it is the other way around. Psychiatrists (and often "medical doctors" as a whole), as cowardous, incompetent quacks on the topic, choose to not acknowledge the issue of competing interests between different people in the real world. They sell out, like politicians bought by lobbyists, instead of being honest to the science they claim to work for.
Disturbed will can be understood as a spectrum. Mild coercion, expresses itself as for example "attention resistance", a resistance to obeying the coercer, and the pseudo-science Psychiatry instead labels the individual resisting as being "attention deficit". The whole field, or, mythology, is an expression of double-speak, twisting things and turning them upside down. It is a lie.
The most extreme form of coercion, will lead to what Psychiatry these days calls the "social defeat" response (Tidey, 1996; Selten, 2005, 2013; 2016; Schalbroeck, 2020). The resistance that may have been possible, breaks down, and the person submits. This is analogous to domesticating other animals than humans, such as a horse, it is the same thing. The person, having little other choice, submits. They then develop what Nietzsche called "slave mentality", that is, their idea system is forced to conform to the social status change. Other animals when they break, do not have an idea system in the way humans do, that can be affected (it is thanks to memetic evolution that humanity is able to create things like computers and art. ) This process of subordinating belief to an oppressor, is what Psychiatry calls "psychosis". Since Psychiatry lives with the myth or dogma that people are acknowledged as equals, slave ideas are a threat, and must be stopped, so that the pretence of equality can continue (think political correctness. )
It is important to recognize that when Psychiatry tries to treat "psychosis", is does not try to treat the submission to an oppressor. In social defeat, the dopamine balance of the ventral tegmental area shifts in two ways, it promotes "breaking down belief" by increasing its signals to the limbic system, promoting formation of new ideas, and, it reduces self-determination, by decreasing signals to the frontal lobe. It does this, as a result of decreased glutamate signals from self-determination in the frontal lobe. Psychiatry historically has only addressed the signals to the limbic system, to create the pretence that "nothing is wrong", and it has done so by actually reducing self-determination signals to the frontal lobe, worsening the submission, exactly analogous to a chemical lobotomy. Why, you may ask. Because the goal of Psychiatry is not to help, it is to eradicate human will to pretend like there cannot be a conflict between the will of different people, something lobotomy is very efficient at. The "anti psychotics" also turn off motor function, in the same way as Parkinson's disease, "disabling" the person in the same way a soldier disables an enemy by shooting them in the leg or tying them up with a rope.
So what is the alternative to chemically trying to reduce the idea system conforming to an oppressor, without removing the oppressor, or, stimulating rebellion? Well, to support one another and not allow an oppressor to "socially defeat" your friends, family and peers. To have each other's back, as brothers. The mythology of Psychiatry is an escape from actually respecting one another as equals, this is its purpose, to pretend to care and "help" each other, while actually throwing your friend or brother under the bus, so that you yourself can profit from it and exploit it to get ahead in life, and knowingly so.
References
Pribram, K. H. (1973). The primate frontal cortex: Executive of the brain. In K. H. Pribram & A. R. Luria, Psychophysiology of the frontal lobes. Oxford, England: Academic Press.
Leigh, H., & Leigh, H. (2010). Genes, Memes, Culture, and Mental Illness. Springer NewYork. https://doi.org/10.1007/978-1-4419-5671-2
Tidey, J. W., & Miczek, K. A. (1996). Social defeat stress selectively alters mesocorticolimbic dopamine release: an in vivo microdialysis study. Brain research, 721(1-2), 140–149. https://doi.org/10.1016/0006-8993(96)00159-x
Selten, J.-P., & Cantor-Graae, E. (2005). Social defeat: Risk factor for schizophrenia? British Journal of Psychiatry, 187(2), 101–102. https://doi.org/10.1192/bjp.187.2.101
Selten, J. P., van der Ven, E., Rutten, B. P., & Cantor-Graae, E. (2013). The social defeat hypothesis of schizophrenia: an update. Schizophrenia bulletin, 39(6), 1180–1186. https://doi.org/10.1093/schbul/sbt134
Selten, J. P., van Os, J., & Cantor-Graae, E. (2016). The social defeat hypothesis of schizophrenia: issues of measurement and reverse causality. World psychiatry : official journal of the World Psychiatric Association (WPA), 15(3), 294–295. https://doi.org/10.1002/wps.20369
Schalbroeck, R. (2020). The social defeat hypothesis of schizophrenia: A parsimonious explanation for multiple psychosis risk factors? Psychological Medicine, 1-2. doi:10.1017/S0033291720004092