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Schizophrenia is a psychotic disorder characterized by disturbances in thought, emotion, and behavior. It is a serious mental illness that afflicts about one percent of the population. This includes beliefs that have no basis in reality and that are not susceptible to corrective delusions, and sensory perceptions that have no identifiable external source. In addition to hallucination and delusions, there are other key symptoms of schizophrenia: disorganized speech, disorganized or catatonic behavior, and negative symptoms. Delusions are the primary example of thought content in schizophrenia. Delusional beliefs conflict with reality and are tenaciously held, despite evidence to the contrary. There are several types of delusions. Delusions of control is the belief that one is being manipulated by an external force, often a powerful individual or organization that has malevolent intent. An example is the F.B.I.
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