Schizoaffective disorder and schizophrenia can cause psychosis, but you may also have prominent mood symptoms with schizoaffective disorder, which isn’t common with schizophrenia. Schizoaffective disorder causes consistent mood disturbances along with psychotic symptoms.
Schizoaffective disorder typically has a later onset with a more episodic course. Schizophrenia typically presents in late adolescence or early adulthood and follows a more deteriorating and chronic course.

