[The psychopathology of acute and transient psychotic disorder].

Acute and transient psychotic disorder remains an important element of the clinical field. It was first observed by Philippe Pinel in the 19th century. Other figures, such as Philippe Chaslin and Valentin Magnan, have contributed to the identification of the disorders and a psychopathological classification. While the central clinical element of acute and transient psychotic disorder is delusion and hallucinations, its resolution can be quick or it may be a sign of the gradual onset of a psychiatric pathology.