Wessely, S · Journal of the Royal College of Physicians of London · 1996
This report from major medical colleges explains that ME/CFS is not caused by a single problem, but rather results from many different factors working together. The condition develops differently in different people, depending on what triggered it initially, what made them vulnerable to it, and what keeps it going. Understanding all these different pieces is important for helping patients recover.
This foundational report from respected medical institutions helped shift clinical understanding of ME/CFS away from single-cause theories toward a more nuanced, multifactorial model. This perspective has influenced how doctors approach diagnosis and treatment, encouraging them to consider the complexity of each patient's illness and the various factors contributing to their symptoms.
This is a clinical consensus report, not a controlled research study, so it does not provide experimental evidence for specific biological mechanisms of ME/CFS. It does not establish which particular factors cause the condition or prove that any single intervention will help all patients. The report identifies a conceptual framework but does not quantify the relative importance of different contributing factors.
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
The first block is for the primary paper and is the citation you should use in research work. The atlas-snapshot line only applies if you are specifically referring to this atlas’s reading of the paper on the date shown.
Primary citation
Wessely, S (1996). Chronic fatigue syndrome. Summary of a report of a joint committee of the Royal Colleges of Physicians, Psychiatrists and General Practitioners.. Journal of the Royal College of Physicians of London. https://pubmed.ncbi.nlm.nih.gov/8961200/
BibTeX
@article{mecfsatlas-wessely-1996-chronic-fatigue,
author = {Wessely, S},
title = {Chronic fatigue syndrome. Summary of a report of a joint committee of the Royal Colleges of Physicians, Psychiatrists and General Practitioners.},
journal = {Journal of the Royal College of Physicians of London},
year = {1996},
note = {PubMed: 8961200},
url = {https://www.mecfsatlas.com/evidence/wessely-1996-chronic-fatigue},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-30. https://www.mecfsatlas.com/evidence/wessely-1996-chronic-fatigue
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