Brief psychotic disorder

Brief psychotic disorder is a psychotic condition marked by the sudden onset of at least one psychotic symptom, such as disorganized speech or thought, delusions, hallucinations, or grossly disorganized or catatonic behavior. The symptoms last from one day to one month and are often accompanied by emotional turmoil, after which all symptoms clear and the person returns to the earlier level of functioning. It can follow a period of extreme stress such as the loss of a loved one, and it may or may not recur, but it should not be caused by another medical condition. Before DSM-IV it was called brief reactive psychosis, and most DSM-5 cases would be classed as acute and transient psychotic disorders in ICD-10. The French term bouffee delirante describes a closely related acute illness.