Peope diagnosed as schizophrenic rarely share the same symptoms, nor is there evidence that they share the same outcomes. The prognosis for patients varies with about 20% recovering their previous level of functioning. 10% achieving signifcant and lasting improvement with intermittent relapses (Bentall et al, 1988). A diagnosis of schizophrenia, therefore, has little predicitve validity - some people never appear to recover from the disorder, but many do.
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