![]() Research suggests that negative symptoms contribute more to poor quality of life, functional disability, and the burden on others than do positive symptoms. ![]() They commonly include flat or blunted affect and emotion, poverty of speech (alogia), inability to experience pleasure (anhedonia), lack of desire to form relationships (asociality), and lack of motivation (avolition). Positive symptoms generally respond well to medication Negative symptoms are deficits of normal emotional responses or of other thought processes, and respond less well to medication. Hallucinations are also typically related to the content of the delusional theme. They can include delusions, disordered thoughts and speech, and tactile, auditory, visual, olfactory and gustatory hallucinations, typically regarded as manifestations of psychosis. ![]() Positive symptoms are those that most individuals do not normally experience but are present in people with schizophrenia. Schizophrenia is often described in terms of positive and negative (or deficit) symptoms.
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