In DSM-IV-TR, mental illness that shares the psychotic symptoms of schizophrenia and the mood disturbances of depression or bipolar disorder within the same time period lasting at least two weeks with an absence of pronounced symptoms associated with mood. Also known as: schizoaffective psychosis; schizoaffective schizophrenia.

SCHIZOAFFECTIVE DISORDER: "People affected with schizoaffective disorder may present flat affect, appearing almost emotionless."