Staud, Roland · Expert review of neurotherapeutics · 2012 · DOI
People with chronic pain often have trouble turning off pain signals in their brain and spinal cord, even when they should. This review explains that many chronic pain conditions—including ME/CFS—share a common problem: their bodies amplify pain signals instead of suppressing them. Tests can measure how well someone's natural pain-blocking system works, and these tests might help predict who will develop chronic pain.
This framework is important for ME/CFS because it positions abnormal pain processing alongside other chronic pain conditions, validating neurobiologic mechanisms in ME/CFS and suggesting that quantitative sensory testing could identify ME/CFS patients at high risk of worsening symptoms or treatment resistance. Understanding shared pain modulation defects across syndromes may identify transdiagnostic therapeutic targets and improve patient stratification.
This review does not prove that abnormal pain modulation causes ME/CFS, only that it is associated with many chronic pain conditions. It is a mechanistic overview, not a prospective study, so it cannot establish whether defective pain inhibition predicts future disease development or severity in any specific population. The reliance on indirect evidence means definitive causal pathways remain unconfirmed.
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
Staud, Roland (2012). Abnormal endogenous pain modulation is a shared characteristic of many chronic pain conditions.. Expert review of neurotherapeutics. https://doi.org/10.1586/ern.12.41
BibTeX
@article{mecfsatlas-staud-2012-abnormal-endogenous,
author = {Staud, Roland},
title = {Abnormal endogenous pain modulation is a shared characteristic of many chronic pain conditions.},
journal = {Expert review of neurotherapeutics},
year = {2012},
doi = {10.1586/ern.12.41},
note = {PubMed: 22550986},
url = {https://www.mecfsatlas.com/evidence/staud-2012-abnormal-endogenous},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-30. https://www.mecfsatlas.com/evidence/staud-2012-abnormal-endogenous
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