Schizoaffective disorder involves a combination of schizophrenia symptoms like delusions or hallucinations along with mood episodes. To be diagnosed, the criteria for schizophrenia must be met along with a major depressive or manic episode. Symptoms must be present for at least part of the illness without a mood episode. Onset is usually in early adulthood. Females are more likely to experience the depressive type. Differential diagnosis involves ruling out other medical or psychiatric causes of psychotic and mood symptoms. Comorbidity with other disorders like substance use or anxiety is common.