<prompt> Acute and transient psychotic disorder, onset of symptoms -1 weeks2 weeks3 weeks4 weeks  <response>: Ans. is B 2 weeks Acute and transient psychotic disorder o These psychotic disorders are characterized by an abrupt less than 48 hours or an acute Less than 2 weeks onset of symptoms. Three types have been recognized according to ICD-10. 1 Acute polymorphic psychotic disorder without symptoms of schizophrenia : - Hallucinations, delusions, and other psychotic symptoms are present and are varied and constantly changing, just like emotional status. None of them is consistent as to qualify for a diagnosis of schizophrenia. The polymorphic and unstable picture is characteristic of illness . 2 Acute polymorphic psychotic disorder with symptoms of schizophrenia : - Polymorphic and unstable symptoms occur along with consistent symptoms of schizophrenia. 3 Acute schizophrenia - like psychotic disorder : - Except for acute and shorter duration of symptoms they resemble schizophrenia in total. Symptoms occur for less than 1 month. Under DSM IV classification, it is classified as brief psychotic disorder. 