Published Online: 30 JAN 2010
Copyright © 2010 John Wiley & Sons, Inc. All rights reserved.
Corsini Encyclopedia of Psychology
How to Cite
Tso, I. F., Chun, J. and Deldin, P. J. 2010. Schizoaffective Disorder. Corsini Encyclopedia of Psychology. 1–3.
- Published Online: 30 JAN 2010
Schizoaffective disorder was first described in the literature by Kasanin in 1933, referring to a group of patients in whom both psychotic (“schizo”) and mood (“affective”) symptoms are prominent features. A formal diagnosis of schizoaffective disorder requires that (1) a mood episode (major depressive, manic, or mixed) co-occurs with active schizophrenia symptoms; (2) hallucinations or delusions have occurred for at least 2 weeks in the absence of prominent mood symptoms; (3) the mood symptoms are present for a substantial portion of the total active and residual phases of schizophrenia; and (4) the symptoms are not related to the direct physiological effects of a substance or a general medical condition. Schizoaffective disorder can be further broken down into two subtypes: depressive type (if the mood component consists of only major depressive episodes) and bipolar type (if a manic or mixed episode is part of the mood component). Because loss of interest or pleasure also resembles another common symptom of schizophrenia (i.e., anhedonia), the other essential feature of a major depressive episode, pervasive depressive mood, must be present in the depressive type of schizoaffective disorder.
- affective disorders;
- bipolar disorder;
- schizophrenia-spectrum disorder