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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.
Bouffée délirante is "an acute, brief nonorganic psychosis that typically presents with a sudden onset of fully formed, thematically variable delusions and hallucinations against a background of some degree of clouding of consciousness, unstable and fluctuating affect, and spontaneous recovery with some probability of relapse."
A 2024 study found that psychedelic use may potentially reduce, or have no effect on, psychotic symptoms in individuals with a personal or family history of psychotic disorders. [75] A 2023 study found an interaction between lifetime psychedelic use and family history of psychosis or bipolar disorder on psychotic symptoms over the past two weeks.
Bouffée délirante is a French term used in the past for acute and transient psychotic disorders (F23 in ICD-10). In DSM-IV, it is described as "brief psychotic disorder" (298.8). The symptoms usually have an acute onset and reach their peak within two weeks.
Capgras delusion or Capgras syndrome is a psychiatric disorder in which a person holds a delusion that a friend, spouse, parent, other close family member, or pet has been replaced by an identical impostor. [a] It is named after Joseph Capgras (1873–1950), the French psychiatrist who first described the disorder.
Psychosis is noted in Other specified schizophrenia spectrum and other psychotic disorders as a DSM-5 category. Schizoaffective disorder is diagnosed if symptoms of mood disorder are substantially present alongside psychotic symptoms. Psychosis that results from a general medical condition or substance is termed secondary psychosis. [10]