What distinguishes schizoaffective disorder from schizophrenia?

What distinguishes schizoaffective disorder from schizophrenia?

• A. Mood symptoms are absent
• B. Mood symptoms present for the majority of the illness
• C. There is no requirement for mood symptoms
• D. Psychotic symptoms must remit within one month

Answer: (B)

The key idea is that schizoaffective disorder merges schizophrenia-like psychosis with a major mood disorder component that dominates the illness. The best answer says mood symptoms are present for the majority of the illness, which captures how mood disturbances run alongside and largely shape the course of the condition, unlike schizophrenia where mood symptoms are not a defining or persistent feature. In addition to mood and psychotic symptoms overlapping, there must be periods of psychosis without mood symptoms to distinguish it from a mood disorder with psychotic features. The other statements misstate the role or duration of mood symptoms: mood symptoms aren’t absent, there is a requirement for mood symptoms, and there isn’t a strict one-month remission rule for psychotic symptoms.

The key idea is that schizoaffective disorder merges schizophrenia-like psychosis with a major mood disorder component that dominates the illness. The best answer says mood symptoms are present for the majority of the illness, which captures how mood disturbances run alongside and largely shape the course of the condition, unlike schizophrenia where mood symptoms are not a defining or persistent feature. In addition to mood and psychotic symptoms overlapping, there must be periods of psychosis without mood symptoms to distinguish it from a mood disorder with psychotic features. The other statements misstate the role or duration of mood symptoms: mood symptoms aren’t absent, there is a requirement for mood symptoms, and there isn’t a strict one-month remission rule for psychotic symptoms.