Opioid-induced psychotic transtorno is characterised by psychotic symptoms (e.g. delusions, hallucinations, disorganised thinking, grossly disorganised behaviour) that develop during or soon after intoxicação com or abstinência from opioids. The intensity or duration of the symptoms is substantially in excess of psychotic-like disturbances of perception, cognition, or behaviour that are characteristic of Opioid intoxicação or Opioid abstinência. The amount and duration of opioid uso must be capable of producing psychotic symptoms. The symptoms are not better explained by a primary mental transtorno (e.g. Esquizofrenia, a Mood transtorno com psychotic symptoms), as might be the case if the psychotic symptoms preceded the onset of the opioid uso, if the symptoms persist for a substantial period of time after cessation of the opioid uso or abstinência, or if there is other evidence of a pre-existing primary mental transtorno com psychotic symptoms (e.g. a history of prior episodes not associated com opioid uso).