symptoms within the context of posttraumati c distress might be an indication of PTSD
rather than conversion disorder (functional neurological symptom disorder).
Psychotic disorders. Flashbacks in PTSD must be di stinguished from illusions, halluci-
nations, and other perceptual disturbances that may occur in schizophrenia, brief psy-
chotic disorder, and other psychotic disord ers; depressive and bipolar disorders with