Schizophrenia Subtypes Schizophrenia Diagnosis Flow Chart Definition Schizophrenia afflicts approximately one percent of the world's population, making it the most common psychosis .
Schizophrenia is characterized by positive and negative symptoms .
Fundamental symptoms included thought disturbance, withdrawal, and difficulties managing affect. Symptoms may also be non-schizophrenic in nature, including anxiety, depression, and psychosomatic. See case studies. C. Grossly disorganized Behavior. D. Catatonic Behavior. .