ABSTRACT
Most of the post-traumatic stress disorder (PTSD) patient who demonstrates dissociative sings, flashbacks and avoid signs could be evaluated as a psychotic disorders. In a recent research; person who exposure the traumatic event and diagnosed as a PTSD patient displays some of the psychotic features in the course of the illness. Discrimination between dissociative disorders and psychotic symptoms could be difficult. One of the subtype of the PTSD with psychotic features was mentioned, whereas the reason of the cognitive decline which seen together psychotic feauteres have not still been elicited yet. Here the association between the psychosis, trauma and cognitive impairment will be discussed over a case of PTSD symptoms and signs which have been exposed to combat- trauma.