is a Japanese psychiatric diagnosis that replaced the previous diagnostic category of which was equivalent to the DSM-IV or ICD-10 diagnosis of schizophrenia. The new term was created and became established in 2002 by the Japanese Society of Psychiatry and Neurology who wished to avoid the ambiguity of the old term, encompass recent advances in schizophrenia research, and move on from the stigma that had become associated with the schizophrenia diagnosis. The new name was inspired by the biopsychosocial model; it increased the number of patients requesting treatment.the percentage of patients who were informed of the diagnosis from 37% to 70% over three years.
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