<prompt> Time interval between acute and persistent psychotic disease is ?1 week2 week3 week1 months  <response>: Ans. is d i.e., 1 months If symtoms are for less than 1 months, it is transient psychotic disorder and if there are for more than 1 months, it is persistent psychotic disorder persistent delusional disorder. Note:- Diagnosic criteria for delusional disorder Persistent delusion disorder has different durations in DSM IV and ICD-10 :- According to DSM IV, symptoms Non bizzare delusion should be for 1 months. According to ICD-10, Symptoms should be for 3 months. 