E0 ConsensusModerate confidencePEM unclearEvidence-MapPeer-reviewedReviewed
ME/CFS and Long COVID share similar symptoms and biological abnormalities: road map to the literature
Anthony L. Komaroff, W. Ian Lipkin · Frontiers in Medicine · 2023 · DOI
Quick Summary
Harvard and Columbia researchers conducted a comprehensive review of biological abnormalities in ME/CFS and Long COVID. They found striking overlaps in immune dysregulation, autonomic dysfunction, metabolic disruption, and neurological features. The paper maps the literature to guide researchers working across both conditions.
Why It Matters
This review by two leading scientists provides a clear synthesis of convergent biological evidence across ME/CFS and Long COVID, supporting the idea that Long COVID is triggering ME/CFS-like disease and that ME/CFS research is highly relevant to understanding Long COVID.
Observed Findings
- Immune dysregulation present in both ME/CFS and Long COVID
- Autonomic dysfunction documented across both conditions
- Metabolic disruption identified in both patient populations
- Neurological features overlap between ME/CFS and Long COVID
- Literature mapping reveals striking biological abnormalities in both conditions
Inferred Conclusions
- ME/CFS and Long COVID may share overlapping pathophysiological mechanisms despite potentially different etiologies
- Comparative research across both conditions could accelerate understanding of shared biological abnormalities
- Systematic literature mapping provides a foundation for unified research approaches
Remaining Questions
- Are the observed biological overlaps due to identical underlying pathophysiology or convergent responses to different triggers?
- Which specific immune, autonomic, metabolic, or neurological markers are pathogenic versus reactive in each condition?
- Can findings from one condition's research be reliably translated to improve diagnosis and treatment in the other?
What This Study Does Not Prove
A narrative review cannot establish causation. The overlap in symptoms does not prove identical pathophysiology.
Tags
Method Flag:PEM_UNCLEARMixed CohortExploratory Only
Symptom:Post-Exertional MalaiseCognitive DysfunctionUnrefreshing SleepOrthostatic IntolerancePainFatigueSensory SensitivityTemperature Dysregulation
Biomarker:CytokinesMetabolomicsAutoantibodiesNeuroimaging
Metadata
- DOI
- 10.3389/fmed.2023.1187163
- Review status
- Editor reviewed
- Evidence level
- Established evidence from major reviews, guidelines, or evidence maps
- Last updated
- 12 April 2026
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 →
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