Schneider's first-rank symptoms (FRS) are a set of symptoms historically considered highly indicative of schizophrenia, although their diagnostic specificity is now debated. Classic FRS include specific types of auditory hallucinations (e.g., voices arguing or discussing the patient, voices speaking the patient's thoughts aloud, or voices commenting on the patient's actions), thought withdrawal, thought insertion, thought broadcasting, and delusions of control, influence, or passivity. Auditory hallucinations of a running commentary on his actions directly fit this description. Disorganized speech and delusions of persecution are core symptoms of schizophrenia but are not specifically classified as FRS by Schneider. Social withdrawal and anhedonia are negative symptoms.
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