Perspective: Drawing on Findings From Critical Illness to Explain Myalgic Encephalomyelitis/Chronic Fatigue Syndrome.
Stanculescu, Dominic, Bergquist, Jonas · Frontiers in medicine · 2022 · DOI
Quick Summary
This paper suggests that ME/CFS might develop through similar biological problems seen in people with severe critical illnesses. The researchers propose that four interconnected issues—reduced blood flow to tissues, damage to the gut lining, problems with pituitary gland function, and low thyroid hormone activity—could work together to create a cycle that keeps ME/CFS going. Understanding these connections could help develop better treatments.
Why It Matters
This framework bridges critical illness and ME/CFS research, suggesting that studying mechanisms from better-understood critical conditions could unlock new diagnostic approaches and treatments for ME/CFS. By identifying potential biological cycles that maintain the disease, researchers may find strategic intervention points to break these cycles and improve outcomes.
Observed Findings
Hypoperfusion and endothelial dysfunction appear in both critical illness and ME/CFS literature
Intestinal barrier injury occurs in critical illness and may contribute to ME/CFS pathology
Pituitary suppression has been previously documented in ME/CFS
Thyroid hormone dysfunction associated with redox imbalance was previously hypothesized by the authors in ME/CFS
Cytokine-mediated inflammatory cycles are documented in critical illness and may perpetuate ME/CFS
Inferred Conclusions
Multiple biological mechanisms implicated in critical illness may also explain ME/CFS origin and persistence
These mechanisms interact in interconnected pathways and vicious cycles that could account for chronic disease perpetuation
Collaborative research between critical illness and ME/CFS fields could yield improved diagnostic and therapeutic strategies
Redox imbalance may be a central feature linking multiple pathophysiological abnormalities in ME/CFS
Remaining Questions
Which of these proposed mechanisms are actually present and active in ME/CFS patients, and in what proportion of the patient population?
What This Study Does Not Prove
This perspective does not prove that any of these mechanisms actually cause ME/CFS, nor does it demonstrate that the proposed pathways operate in ME/CFS patients. It is a hypothesis-generating synthesis without new experimental or clinical data, so the proposed mechanisms require direct validation through targeted research studies.
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 →