Spiritual psychosis is not an official medical term, however for deeper reference, it was studied by Carl Gustav Jung.
Spiritual psychosis can be a result of
(1) not pursuing psychic abilities and then learning to control and maintain them (Jung, chapters on hysteria Psychiatric Studies)
(2) being cursed by a sophisticated magician, alchemist, witch doctor, oracle of Satan’s reign etc… and then experiencing psychosis as defined by the Diagnostic Statistical Manual published by the American Psychiatric Association
(3) Experiencing a situation similar to that of Needy from ‘Jennifer’s Body’ or Rosemary from ‘Rosemary’s Baby’ mental and emotional bewitchment causing severe traumatic internal and external responses
Guy 1: That movie was all about spiritual psychosis.
Guy 2: Do you really believe in that stuff?
Guy 3: I surely do my girlfriend’s been assuming that I’m cheating on her. She had this crazy talk saying she saw a doppelgänger couple of us fighting in the presence of another girl.
Guy 1: Your girlfriend is a nut job.
Guy 2: Does she take any medication for that?
Guy 3: Stop being a—holes. I’m Catholic. I believe her.
Guy 2: I look forward to the wedding.
Guy 1: You’re both the nutty bunch.