I viewed a thread from RE: Matters to Consider when Reducing or Coming off Meds: it said "Potential adverse effects upon withdrawal of atypical neuroleptic."
"The development of psychotic symptoms when there is excess dopamine transmission (as may occur in abrupt withdrawal) may lead some individuals to believe that increased dopamine signaling may have been responsible for the psychotic experiences an individual initially had when the drugs were first prescribed. However, individuals who had no psychiatric history have been given a course of neuroleptic treatment, and when the neuroleptics were abruptly withdrawn some of these individuals developed 'psychotic symptoms'."

This suggests that the drugs can perpetuate the mental illness long after an
acute episode that required meds for a temporary use, has occurred.