This video describes the difference between Schizoaffective Disorder and Schizophrenia.
Schizophrenia is sometimes conceptualized as having three phases: active phase (acute phase), prodromal phase, and residual phase. The active phase of Schizophrenia is characterized by hallucinations, delusions, disorganized speech, disorganized or catatonic behavior, and negative symptoms. Negative symptoms include avolition, which is a reduction in goal-directed behavior. The prodromal and residual phases are characterized by ideas of reference, unusual perceptions, vague speech, and negative symptoms. All the phases of Schizophrenia are associated with dysphoric mood, inappropriate affect, decreased interest in food and eating, sleep disturbance, and cognitive deficits. Hostility and aggression are sometimes associated with Schizophrenia, but the majority of individuals with Schizophrenia are not hostile or aggressive. Random assaults are not common. Schizophrenia is associated with an increased risk of suicidal behavior. Anosognosia often occurs with Schizophrenia. Anosognosia is a lack of insight or awareness about having a disorder and is a strong predictor of poor treatment outcomes. Schizophrenia is typically treated with medication and psychotherapy. Symptoms need to be present for 6 months for a diagnosis of Schizophrenia.
Schizoaffective Disorder is characterized by the symptoms of Schizophrenia and the symptoms of a major mood episode.