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Schizophrenia is a mental disorder [17][7] characterized by hallucinations (typically hearing voices), delusions, disorganized thinking and behavior, [10] and flat or inappropriate affect. [7] Symptoms develop gradually and typically begin during young adulthood and are never resolved. [3][10] There is no objective diagnostic test; diagnosis is ...
By age and gender. Schizophrenia is diagnosed 1.4 times more frequently in males than females, and typically appears earlier in men [ 7 ] —the peak ages of onset are 20–28 years for males and 26–32 years for females. [ 9 ] Onset in childhood, before the age of 13 can sometimes occur. [ 10 ][ 11 ] A later onset can occur between the ages ...
Schizophreniform disorder is a type of mental illness that is characterized by psychosis and closely related to schizophrenia.Both schizophrenia and schizophreniform disorder, as defined by the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR), have the same symptoms and essential features except for two differences: the level of functional impairment and the duration of symptoms.
Schizophrenia is thought to have a heritable component in some people, but many people who appear to carry schizophrenia-associated genes may not develop the disease. [13] Research has shown that schizophrenia is a polygenic disorder and that genetic vulnerability to schizophrenia is highly multifactorial , caused by the interactions of several ...
The prognosis of schizophrenia is varied at the individual level. In general it has great human and economics costs. [1] It results in a decreased life expectancy of 12–15 years primarily due to its association with obesity, little exercise, and smoking, while an increased rate of suicide plays a lesser role. [1]
Dementia praecox was reconstituted as schizophrenia, paranoia was renamed as delusional disorder and manic-depressive insanity as bipolar disorder (epilepsy was transferred from psychiatry to neurology). The 'mental symptoms' included under the concept schizophrenia are real enough, affect people, and will always need understanding and treatment.