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Amphetamine and negative symptoms of schizophrenia
M Sanfilipo1, A Wolkin, B Angrist
1Department of Psychiatry, New York Veterans Affairs Medical Center, 10010, USA.
Abstract:
The purpose of this study was to assess further the effect of amphetamine on negative symptoms of schizophrenia. Thirty-seven schizophrenic males meeting DSM-III criteria were rated with the Brief Psychiatric Rating Scale, the Abrams and Taylor Scale, and the Abnormal Involuntary Movements Scale before and after double-blind administration of either amphetamine (n = 26) or placebo (n = 11). Our results indicated that amphetamine administration generally did not improve negative symptoms, even when accounting for changes in positive symptoms. However, greater baseline negative symptoms were associated with a modest diminution after amphetamine treatment. Therefore, amphetamine may modestly improve negative symptoms in those schizophrenics in whom this symptomatology is more severe.
Insights
Amphetamine did not generally improve negative symptoms in schizophrenia patients. However, it may offer modest benefits for individuals with more severe negative symptoms.
Area of Science:
- Psychiatry
- Neuroscience
- Pharmacology
Background:
- Negative symptoms of schizophrenia significantly impair functioning.
- Current treatments for negative symptoms are limited.
Purpose of the Study:
- To evaluate the efficacy of amphetamine in treating negative symptoms of schizophrenia.
- To determine if baseline symptom severity influences amphetamine's effect.
Main Methods:
- Double-blind, placebo-controlled study.
- 37 male schizophrenia patients (DSM-III criteria).
- Assessment using Brief Psychiatric Rating Scale, Abrams and Taylor Scale, and Abnormal Involuntary Movements Scale.
Main Results:
- Amphetamine did not significantly improve negative symptoms overall.
- A modest reduction in negative symptoms was observed in patients with higher baseline severity.
- No significant changes in positive symptoms were noted.
Conclusions:
- Amphetamine is unlikely to be a primary treatment for negative symptoms in schizophrenia.
- A potential modest benefit exists for a subset of patients with severe negative symptoms.
- Further research is warranted to explore this specific patient subgroup.
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