Relatively short-lived periods of psychosis are characterized by the sudden onset of severe disturbances in perception, thinking, and behavior. these episodes typically last for a brief duration, generally ranging from a few days to a few weeks, and are often triggered by a significant stressor or traumatic event. []

Brief psychotic disorder—according to the classifications of mental disorders DSM-IV-TR and DSM-5—is a psychotic condition involving the sudden onset of at least one psychotic symptom (such as disorganized thought/speech, delusions, hallucinations, or grossly disorganized or catatonic behavior) lasting 1 day to 1 month, often accompanied by emotional turmoil. Remission of all symptoms is complete with patients returning to the previous level of functioning...