Fatt, Scott J, Cvejic, Erin, Lloyd, Andrew R et al. · Current rheumatology reports · 2019 · DOI
This review looked at research comparing three levels of tiredness: prolonged fatigue (lasting 1-6 months), chronic fatigue (lasting over 6 months), and ME/CFS (a more severe condition). The authors found that people with chronic fatigue and ME/CFS report very similar struggles with physical symptoms, emotional challenges, and difficulty with daily activities. However, researchers still don't understand why some people's fatigue gets worse and develops into ME/CFS while others' doesn't.
Understanding how prolonged fatigue and chronic fatigue differ from ME/CFS is crucial for early diagnosis and treatment. This review highlights important gaps in knowledge that, if addressed, could help doctors better support patients and develop more targeted rehabilitation approaches tailored to disease severity.
This review does not establish causal mechanisms explaining fatigue progression or identify definitive biological markers that distinguish between these conditions. It does not prove that prolonged fatigue inevitably progresses to ME/CFS, nor does it provide evidence for specific early intervention strategies. The study is limited to existing literature and cannot resolve fundamental questions about disease etiology or natural history without new longitudinal research.
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
Fatt, Scott J, Cvejic, Erin, Lloyd, Andrew R, Vollmer-Conna, Ute, & Beilharz, Jessica Elise (2019). The Invisible Burden of Chronic Fatigue in the Community: a Narrative Review.. Current rheumatology reports. https://doi.org/10.1007/s11926-019-0804-2
BibTeX
@article{mecfsatlas-fatt-2019-invisible-burden,
author = {Fatt, Scott J and Cvejic, Erin and Lloyd, Andrew R and Vollmer-Conna, Ute and Beilharz, Jessica Elise},
title = {The Invisible Burden of Chronic Fatigue in the Community: a Narrative Review.},
journal = {Current rheumatology reports},
year = {2019},
doi = {10.1007/s11926-019-0804-2},
note = {PubMed: 30741357},
url = {https://www.mecfsatlas.com/evidence/fatt-2019-invisible-burden},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-28. https://www.mecfsatlas.com/evidence/fatt-2019-invisible-burden
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