Schizoaffective disorder within the DSM-5 is a lifetime diagnosis. Rather than only defining a single episode with concurrent psychotic and mood syndromes, the DSM-5 considers the time of onset of psychosis up to the current episode for diagnosis. In order to meet sufficient diagnostic criteria for a mood episode, mood symptoms must be present for at least half of the total duration of illness from onset of the first psychosis. This includes both prodromal and residual phases of psychosis to meet the criteria for Schizoaffective Disorder