The Diagnostic and Statistical Manual of Mental Disorders 5th edition (DSM-5) diagnostic category brief psychotic disorder is probably the closest analog of BD. The French term BD is nowhere mentioned in DSM-5. The diagnosis of Bouffée Délirante is still in use in the Classification Française des Troubles Mentaux (French Classification of Mental Disorder, CFTM) under the name Bouffée délirante aiguë. Incidence
The frequency of  BD diagnoses in French hospitals has been declining due to the widespread acceptance of international classification systems such as the ICD-10 and DSM-5. However, the BD diagnosis has been used as recently as 2019 in Le Groupe Hospitalier Universitaire Paris psychiatrie & neurosciences (GHU Paris), Maison Blanche Bichat XVIII. Older estimates of the incidence of BD in psychiatric hospitalizations ranges from 1–5%. Psychiatric admission reviews show that 2–7% of first episode psychotic episodes are due to brief psychotic disorder; here serving as a surrogate diagnosis for BD. Some authors state that the diagnostic category of BD can be eliminated because it can be fully integrated into the Polymorphic subgroup of Acute and Transient Psychotic Disorders of the ICD-10. Treatment
There are no current published guidelines in the English language psychiatric literature that discuss treatment for BD. A 2019 case of BD from GHU Paris treated the patient with largactil (chlorpromazine). Assuming that BPD is an equivalent diagnosis, treatment depends on the severity of the episode. Mildly affected patients may receive supportive management and observation with additional outpatient therapy.
Symptoms vary rapidly, perhaps even by the hour, and there is a rapid return to the premorbid state of health." A frequently quoted authority on BD, P. Pichot (Hôpital Sainte Anne, Paris) provides this description of BD: 

sudden onset: a bolt from the blue. manifold delusions without recognizable structure and cohesiveness with/without hallucinations. clouding of consciousness associated with emotional instability. absence of physical signs. rapid return to pre-morbid level of functioning.Pichots criteria can be refined further with these typical clinical characteristics: 

age: usually between 20 and 40 years of age. onset: acute without prior mental illness (with the exception of previous episodes of bouffée délirante). past history: no chronic mental disturbance after resolution of the BD episode. typical symptoms: delusions and/or hallucinations of any type. Depersonalization/derealization and/or confusion
depression and/or elation. symptoms quite variable from day to day and even hour to hour. not due to alcohol, drug use, or organic mental disorder. Formal classification
In 1968 the French national organization INSERM (Institut National de la Santé et de la Recherche Médicale) classification of mental illness referenced two types of BD in their category acute delusional psychoses and confusional states viz. reactive bouffée délirante and bouffée délirante (Magnans type). This classification scheme has been largely replaced by the two nosological systems discussed below.