Morris, Gerwyn, Maes, Michael · Metabolic brain disease · 2013 · DOI
This study proposes a theory about how ME/CFS develops and persists. The researchers suggest that an initial infection triggers the immune system, which then gets stuck in an overactive state even after the infection is cleared. This causes ongoing inflammation, energy problems in cells, and damage to the nervous system, leading to the characteristic symptoms including post-exertional malaise (feeling worse after activity).
This mechanistic model provides a unifying biological framework for understanding diverse and seemingly contradictory findings in ME/CFS research, helping researchers design more targeted therapeutic strategies. For patients, it offers a coherent explanation for why symptoms persist and why post-exertional malaise occurs, potentially improving physician understanding and reducing dismissal of the disease.
This paper is a theoretical model, not a empirical study presenting new experimental data—it does not prove causation or validate any specific mechanism through testing. The model synthesizes existing literature rather than establishing which proposed mechanisms actually operate in patients. It cannot establish whether oxidative/nitrosative stress is a primary driver or a secondary consequence of other ME/CFS pathology.
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
Morris, Gerwyn & Maes, Michael (2013). A neuro-immune model of Myalgic Encephalomyelitis/Chronic fatigue syndrome.. Metabolic brain disease. https://doi.org/10.1007/s11011-012-9324-8
BibTeX
@article{mecfsatlas-morris-2013-neuro-immune,
author = {Morris, Gerwyn and Maes, Michael},
title = {A neuro-immune model of Myalgic Encephalomyelitis/Chronic fatigue syndrome.},
journal = {Metabolic brain disease},
year = {2013},
doi = {10.1007/s11011-012-9324-8},
note = {PubMed: 22718491},
url = {https://www.mecfsatlas.com/evidence/morris-2013-neuro-immune},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-28. https://www.mecfsatlas.com/evidence/morris-2013-neuro-immune
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