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Related Experiment Videos

The placebo effect in agoraphobia.

M Mavissakalian

    The Journal of Nervous and Mental Disease
    |February 1, 1987
    PubMed
    Summary
    This summary is machine-generated.

    This study found a small but specific placebo effect in agoraphobia patients, showing symptom reduction without significant functional improvement. This suggests placebo response warrants consideration in agoraphobia research.

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    Area of Science:

    • Psychiatry
    • Clinical Psychology
    • Pharmacology

    Background:

    • Agoraphobia is an anxiety disorder characterized by fear of situations where escape might be difficult.
    • The role of placebo response in anxiety disorders requires further investigation.

    Purpose of the Study:

    • To investigate the presence and specificity of a placebo response in patients with agoraphobia.
    • To examine the impact of placebo on both symptom reduction and functional outcomes.

    Main Methods:

    • Single-blind placebo administration to 20 agoraphobic patients over 2 weeks, without exposure instructions.
    • Double-blind comparison of placebo versus "no pills" in matched groups of agoraphobic patients over 8 weeks.

    Main Results:

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  • A statistically significant reduction in panic and phobic symptoms was observed in the single-blind placebo group.
  • Despite symptom reduction, functioning remained largely unchanged, with symptoms persisting in the moderate to severe range.
  • A significant placebo effect was identified in the 8-week double-blind comparison.

    • Conclusions:

    • A weak but specific placebo response exists in agoraphobia.
    • The findings have implications for the design and interpretation of clinical trials for agoraphobia treatments.
    • Further research is needed to understand the mechanisms and clinical significance of placebo effects in this population.