Positive and negative symptoms

Symptoms in schizophrenia can be categorised in two ways:


 * Positive symptoms (those additional to normal experience and behavior) 'Positive symptoms' describe psychosis and typically include delusions, hallucinations and thought disorder.

Negative symptoms describe inappropriate or nonpresent emotion, poverty of speech, and lack of motivation.

In three-factor models of schizophrenia, a third symptom grouping, the so-called disorganization syndrome, is also given. This considers thought disorder and related disorganized behavior to be in a separate symptom cluster from delusions and hallucinations.

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Papers

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