Ībout 0.3% to 0.7% of people are diagnosed with schizophrenia during their lifetime. Many people with schizophrenia have other mental disorders, especially substance use disorders, depressive disorders, anxiety disorders, and obsessive–compulsive disorder.
To diagnose someone with schizophrenia, doctors are supposed to confirm that symptoms and functional impairment are present for six months ( DSM-5) or one month ( ICD-11). Besides observed behavior, doctors will also take a history that includes the person's reported experiences, and reports of others familiar with the person, when making a diagnosis. There is no objective diagnostic test the diagnosis is used to describe observed behavior that may stem from numerous different causes. Symptoms typically come on gradually, begin in young adulthood, and in many cases never resolve. Other symptoms include social withdrawal, decreased emotional expression, and apathy. Major symptoms include hallucinations (typically hearing voices), delusions, paranoia, and disorganized thinking. Schizophrenia is a mental disorder characterized by continuous or relapsing episodes of psychosis. Substance use disorder, Huntington's disease, mood disorders ( bipolar disorder), autism, borderline personality disorder Ģ0 years shorter life expectancy Suicide, heart disease, lifestyle diseases įamily history, cannabis use in adolescence, problems during pregnancy, childhood adversity, birth in late winter or early spring, older father, being born or raised in a city īased on observed behavior, reported experiences, and reports of others familiar with the person Hallucinations (usually hearing voices), delusions, paranoia, confused thinking / ˌ s k ɪ t s ə ˈ f r iː n i ə/, UK also / ˌ s k ɪ d z ə-/, US also /- ˈ f r ɛ n i ə/.