Brief psychotic disorder (BPD) according to DSM-5 is the sudden onset of psychotic behavior that lasts less than 1 month followed by complete remission with possible future relapses. It is differentiated from schizophreniform disorder and schizophrenia by the duration of the psychosis. The diagnosis is often anticipatory or retrospective due to the diagnostic requirement of complete remission within 1 month.
Brief psychotic disorder is an acute but transient disorder with the onset of one or more of the following psychotic symptoms:
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Delusions
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Hallucinations
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Disorganized speech
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Grossly disorganized or catatonic behavior
At least one of these symptoms must be delusions, hallucinations, or disorganized speech. The symptoms in BPD last between one day to one month, with a complete return to premorbid level of functioning after the disease course in response to antipsychotic medications. The disturbance in behavior cannot be better accounted for by schizophrenia, schizoaffective disorder, mood disorder with psychotic features, or be a direct result of a drug, medication, or medical condition like thyrotoxicosis, sarcoidosis, or syphilis.
Etiology
Although unclear, the underlying etiology of brief psychotic disorder can be a stressful event or trauma. There may be a genetic, neurological, or environmental component to BPD as well. The specific trigger of BPD, if present, must be specified as follows[2][3]:
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Brief psychotic disorder with marked stressor(s) is also referred to as brief reactive psychosis. It is the onset of psychotic symptoms that occur in response to a traumatic event that would be stressful for anyone in similar circumstances in the same culture
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Brief psychotic disorder without marked stressor(s) is the onset of psychotic symptoms that occur in the absence of a traumatic event that would be stressful for anyone in similar circumstances in the same culture
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Brief psychotic disorder with postpartum onset is defined as the onset of psychotic symptoms that occur within four weeks postpartum more