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Related Experiment Video

Updated: Feb 19, 2026

How to Study Placebo Responses in Motion Sickness with a Rotation Chair Paradigm in Healthy Participants

How to Study Placebo Responses in Motion Sickness with a Rotation Chair Paradigm in Healthy Participants

Published on: December 14, 2014

Minimizing nocebo effect: Pragmatic approach.

Majed Chamsi-Pasha¹, Mohammed Ali Albar², Hassan Chamsi-Pasha³

¹Department of Medicine, King Fahd Armed Forces Hospital, Jeddah, Saudi Arabia.

Avicenna Journal of Medicine

|November 10, 2017

Summary

This summary is machine-generated.

The nocebo effect, where negative expectations cause harmful side effects, is under-appreciated. Physicians must recognize and minimize this phenomenon to improve patient care.

Keywords:

Drugs medical ethics nocebo placebo treatment

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Area of Science:

Psychosomatic Medicine
Clinical Pharmacology
Neurology

Background:

The nocebo effect, the inverse of the placebo effect, describes harmful outcomes from negative expectations.
It is triggered by informing patients about potential adverse events, increasing their occurrence.
This phenomenon is observed across various conditions, including neurological diseases and depression.

Purpose of the Study:

To highlight the significance and under-appreciation of the nocebo effect.
To emphasize the impact of patient expectations and information on adverse event reporting.
To call for further research into the nocebo phenomenon's mechanisms and clinical implications.

Main Methods:

Review of existing literature on the nocebo effect.
Analysis of studies demonstrating increased adverse event reporting due to pre-treatment information.
Examination of nocebo effect prevalence in specific disease states.

Main Results:

Informing patients about potential sexual side effects of beta-blockers increased reporting by 3-4 times compared to controls.
The nocebo effect is prevalent in conditions like migraine, epilepsy, multiple sclerosis, Parkinson's disease, neuropathic pain, and depression.
The biological and theoretical underpinnings of the nocebo effect are not yet fully understood.

Conclusions:

The nocebo effect significantly influences patient-reported adverse events.
Physicians need heightened awareness to recognize and mitigate nocebo-related harm.
Further research is crucial to elucidate the mechanisms and optimize management strategies for the nocebo effect.