Bossrat, you're speaking in platitudes, and being vague. No there are not many explanations for multi day long psychosis. In fact, psychosis from Adderal and all those other things you mentioned is a more rare side-effect than the percentage of people who will get Schizophrenia to begin with. So please, fully understand a topic before you interject.
Please realize Schizophrenia affects 1.1% of the American population, and that's just the general form, and that which is diagnosed. The real number is likely higher. It is neither an 'extreme diagnosis' nor is it that rare.