MENTAL DISORDERS | —- schizophrenia
(/ˌskɪtsɵˈfrɛniə/ or /ˌskɪtsɵˈfriːniə/) is a mental disorder characterized by a breakdown of thought processes and by a deficit of typical emotional responses. Common symptoms include auditory hallucinations, paranoid or bizarre delusions, or disorganized speech and thinking, and it is accompanied by significant social or occupational dysfunction. The onset of symptoms typically occurs in young adulthood, with a global lifetime prevalence of about 0.3–0.7%. Diagnosis is based on observed behavior and the patient’s reported experiences.
People with schizophrenia may not make sense when they talk. They may sit for hours without moving or talking. Sometimes people with schizophrenia seem perfectly fine until they talk about what they are really thinking.
Despite the etymology of the term from the Greek roots skhizein (σχίζειν, “to split”) and phrēn, phren- (φρήν, φρεν-; “mind”), schizophrenia does not imply a “split personality”, or “multiple personality disorder” (which is known these days as dissociative identity disorder) — a condition with which it is often confused in public perception. Rather, the term means a “splitting of mental functions”, because of the symptomatic presentation of the illness.