E0 ConsensusModerate confidencePEM unclearReview-NarrativePeer-reviewedMachine draft
COVID-19-associated neurological and psychological manifestations.
Wilson, Jo Ellen, Gurdasani, Deepti, Helbok, Raimund et al. · Nature reviews. Disease primers · 2025 · DOI
Quick Summary
Long COVID is a condition that develops after COVID-19 infection and causes ongoing symptoms for at least 3 months. People with Long COVID commonly experience brain fog, memory problems, anxiety, depression, headaches, sleep issues, and severe exhaustion after physical activity. This review explains what we know about what causes these symptoms and why treatment needs to be personalized based on each person's unique symptoms.
Why It Matters
This comprehensive review is important for ME/CFS patients and researchers because Long COVID shares significant clinical and mechanistic overlap with ME/CFS, including post-exertional malaise, cognitive dysfunction, and autonomic symptoms. Understanding the diverse pathophysiological mechanisms proposed for Long COVID may illuminate similar underlying processes in ME/CFS and help guide toward more effective, personalized treatment strategies.
Observed Findings
- Long COVID affects an estimated 80-400 million people globally with community incidence of 5-20% and up to 50% among hospitalized patients
- Common neuropsychiatric symptoms include memory deficits, executive dysfunction, anxiety, depression, headaches, sleep disturbance, neuropathies, anosmia/ageusia, dizziness, and post-exertional malaise
- Proposed underlying mechanisms include SARS-CoV-2 viral persistence, herpesvirus reactivation, microbiota dysbiosis, autoimmunity, clotting and endothelial abnormalities, and chronic immune activation
- Clinical presentation is highly variable between patients
Inferred Conclusions
- Long COVID represents a heterogeneous infection-associated chronic condition with multiple overlapping pathophysiological mechanisms
- Management strategies must be individualized and tailored to each patient's specific symptom profile rather than using uniform approaches
- Both neurobiological and immunological factors contribute to Long COVID symptomatology
Remaining Questions
- Which pathophysiological mechanisms are primary versus secondary, and what determines individual variation in disease presentation?
- How do the proposed mechanisms for Long COVID relate to ME/CFS pathology, and are they the same condition?
What This Study Does Not Prove
As a narrative review rather than a primary research study, this does not provide new experimental data or definitively prove causation between any proposed mechanism and Long COVID symptoms. The review synthesizes existing literature on mechanisms but does not establish which mechanisms are primary drivers versus secondary consequences, nor does it provide evidence specific to ME/CFS populations.
Tags
Symptom:Post-Exertional MalaiseCognitive DysfunctionUnrefreshing SleepOrthostatic IntoleranceSensory Sensitivity
Biomarker:CytokinesAutoantibodiesBlood Biomarker
Phenotype:Infection-TriggeredLong COVID Overlap
Method Flag:Weak Case Definition
Metadata
- DOI
- 10.1038/s41572-025-00674-7
- PMID
- 41444262
- Review status
- Machine draft
- Evidence level
- Established evidence from major reviews, guidelines, or evidence maps
- Last updated
- 10 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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