Positive and negative symptoms of schizophrenia

Positive and negative symptoms of schizophrenia

What is meant by positive and negative symptoms of schizophrenia and which account for greater impairment in overall functioning? 

Hallucinations and delusions are considered positive symptoms because they are experiences in addition to normal experience, whereas negative symptoms (“the 5 As”: diminished or flattened ffective expression, volition, logia, nhedonia, and sociality) denote a deficit of experience.

Negative symptoms are prominent in schizophrenia and are thought to account for greater functional impairment in persons with schizophrenia and greater burden for their caretakers 

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