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psychosis
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psychosis

psychology
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Written by
Gary J. Tucker
Professor Emeritus of Psychiatry and Behavioral Sciences, University of Washington, Seattle
Gary J. Tucker
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Plural:
psychoses
Key People:
Patrick McGorry
Eugen Bleuler

psychosis, any of several major mental illnesses that can cause delusions, hallucinations, serious defects in judgment and other cognitive processes, and the inability to evaluate reality objectively. A brief treatment of psychosis follows. For full treatment, see mental disorder. The term psychosis is derived from the Greek psyche, meaning “soul,” “mind,” or “breath.” The ancient Greeks believed that the breath was the animating force of life and that when the breath left the body, as happened in death, the soul left the body. Because words that contain the root psyche (e.g., psychiatrist, psychiatry, etc.) are associated with the essence of ...(100 of 1514 words)

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