Mind over matter? study probes why some feel sick without a physical cause
NCT ID NCT06800976
First seen Jan 04, 2026 · Last updated Jun 22, 2026 · Updated 27 times
Summary
This study compares 69 healthy volunteers to people with idiopathic environmental intolerance (IEI), a condition where patients experience symptoms like pain or fatigue but no physical cause is found. Researchers will test whether certain thinking patterns or biases make people more likely to develop these symptoms. The goal is to better understand the role of beliefs in physical sensations, which could eventually lead to better support or treatments.
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Contacts and locations
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Study contacts
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Contact
Email: •••••@•••••
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
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Unité de pathologies professionnelles et environnementales, Hôtel-Dieu
Paris, Île-de-France Region, 75004, France
Contact
Contact Email: •••••@•••••
Contact Phone: •••-•••-•••• Email: •••••@•••••
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
What this could lead to
If successful, this study could help explain why some people develop physical symptoms without a clear physical cause, potentially guiding future treatments.
What could go wrong
This is an observational study with healthy volunteers, not a treatment trial. It is small (69 people) and early-stage, so results may not apply broadly.
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.