Ghali, Alaa, Lacout, Carole, Fortrat, Jacques-Olivier et al. · Diagnostics (Basel, Switzerland) · 2022 · DOI
This study looked at 168 ME/CFS patients to understand what factors help people recover or significantly improve. The research found that only about 13% of patients experienced recovery or substantial improvement over time. Interestingly, patients who were older when they first got sick were more likely to improve, and people who received a diagnosis sooner (without long delays) also had better outcomes. The study confirms that ME/CFS is generally a serious condition with poor prognosis, but suggests that improvement is possible at any age.
Understanding prognostic factors is crucial for ME/CFS patients seeking information about their disease course and potential for improvement. The finding that older age at onset associates with better outcomes challenges pessimistic assumptions and provides hope. Additionally, the harmful effect of diagnostic delay supports the importance of early recognition and rapid diagnosis.
This study cannot establish causation—the association between older age at onset and better outcomes may reflect unmeasured confounders or selection bias rather than true biological mechanisms. The findings cannot be generalized beyond the French hospital population studied. The small recovery/improvement rates do not rule out that other unmeasured interventions or patient subgroups might have different trajectories.
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
Ghali, Alaa, Lacout, Carole, Fortrat, Jacques-Olivier, Depres, Karine, Ghali, Maria, & Lavigne, Christian (2022). Factors Influencing the Prognosis of Patients with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome.. Diagnostics (Basel, Switzerland). https://doi.org/10.3390/diagnostics12102540
BibTeX
@article{mecfsatlas-ghali-2022-factors-influencing,
author = {Ghali, Alaa and Lacout, Carole and Fortrat, Jacques-Olivier and Depres, Karine and Ghali, Maria and Lavigne, Christian},
title = {Factors Influencing the Prognosis of Patients with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome.},
journal = {Diagnostics (Basel, Switzerland)},
year = {2022},
doi = {10.3390/diagnostics12102540},
note = {PubMed: 36292229},
url = {https://www.mecfsatlas.com/evidence/ghali-2022-factors-influencing},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-30. https://www.mecfsatlas.com/evidence/ghali-2022-factors-influencing
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