(1) Suddenly sleep poorly for no reason (2) Suddenly become listless (3) Suddenly become dizzy, dizzy or unwell for no reason (4) Behave differently than usual (5) Suddenly become blank in the mind, think, speak or write with sudden interruptions or difficulty or slowness (6) Experience past symptoms again, such as hearing someone talking out of nowhere, suspecting that people are talking about him behind his back, etc. (7) Talk to oneself for no reason (8) Become restless and unsure of what to do for no reason, as if something catastrophic is about to happen, with a sense of impending disaster