E2 ModeratePreliminaryPEM not requiredObservationalPeer-reviewedReviewed
Standard · 3 min
CFS in Children and Adolescent: Ten Years of Retrospective Clinical Evaluation.
Elgen, Irene, Hikmat, Omar, Aspevik, Tora N et al. · International journal of pediatrics · 2013 · DOI
Quick Summary
This study looked at 27 children and adolescents diagnosed with ME/CFS over a 10-year period in one clinic. Almost all of them developed fatigue after an infection and showed evidence of past viral infections. About 44% were underweight. The researchers concluded that diagnosing ME/CFS in young people requires careful evaluation by multiple specialists and attention to nutrition and mental health.
Why It Matters
This study addresses an understudied population—children with ME/CFS—and documents that pediatric cases show clear infection-triggered onset and immunological markers consistent with post-viral illness. The finding that nutritional status and comorbid issues are common underscores the need for comprehensive evaluation in young people, informing clinical care pathways and highlighting gaps in European diagnostic guidelines.
Observed Findings
27 of 37 referred children received a CFS diagnosis; 6 received alternative diagnoses after evaluation
All 27 diagnosed patients reported fatigue onset following an infection episode
All 27 patients showed seropositivity (IgG) to EBV, CMV, or borrelia
59% of diagnosed patients were male (16 of 27)
44% of diagnosed patients were underweight (BMI <17.5; n=12)
Inferred Conclusions
Infection-triggered fatigue onset is characteristic of pediatric CFS cases in this cohort
Multidisciplinary systematic evaluation is necessary for accurate pediatric CFS diagnosis
Nutritional status, eating disorders, and psychosocial factors require careful assessment in children presenting with suspected CFS
Systematic European diagnostic guidelines for pediatric CFS are needed
Remaining Questions
What is the prevalence and natural history of ME/CFS in the broader pediatric population, and how do presentation and outcomes differ across age groups?
Does the presence of IgG seropositivity to EBV, CMV, or borrelia predict treatment response or prognosis in pediatric ME/CFS?
What This Study Does Not Prove
This retrospective, single-clinic study cannot establish causation between prior infections and ME/CFS development or determine prevalence in the general pediatric population. The serological positivity (IgG to EBV/CMV/borrelia) indicates past infection but does not prove it directly caused CFS, as these infections are common. The study also does not compare ME/CFS children against matched healthy controls or systematically assess functional impairment or post-exertional malaise.
Tags
Symptom:Fatigue
Biomarker:Autoantibodies
Phenotype:Infection-TriggeredPediatric
Method Flag:PEM Not DefinedWeak Case DefinitionNo ControlsSmall SampleExploratory Only
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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What proportion of underweight pediatric patients have primary malnutrition versus secondary effects from chronic illness, and how does this affect management?
How do psychosocial factors and functional impairment correlate with infection markers and nutritional status in pediatric ME/CFS?