Postdengue chronic fatigue syndrome in an adolescent boy.
Thadchanamoorthy, Vijayakumary, Dayasiri, Kavinda · BMJ case reports · 2021 · DOI
Quick Summary
This case report describes an 11-year-old boy who developed ME/CFS symptoms after recovering from dengue hemorrhagic fever. Three weeks after initially feeling better, he experienced severe joint pain, muscle aches, and headaches that persisted for at least a year despite physiotherapy and nutrition support. This case adds to growing evidence that ME/CFS can develop following viral infections, even in young people.
Why It Matters
This case demonstrates that ME/CFS can develop in children and adolescents following specific viral infections like dengue, not just in adults. Understanding viral triggers helps clinicians recognize and diagnose ME/CFS earlier in young patients. It also highlights the need for better treatment strategies, as standard interventions did not resolve symptoms in this case.
Observed Findings
Symptom onset occurred 3 weeks after dengue hemorrhagic fever recovery, not during acute infection
Severe joint pain, myalgia, and headache were the primary presenting symptoms
Routine laboratory investigations were normal except for mild elevated liver function tests
Symptoms persisted for at least 12 months despite physiotherapy and nutrition counseling
No specific biomarkers or abnormal diagnostic findings distinguished this ME/CFS case
Inferred Conclusions
Dengue infection can trigger ME/CFS development in pediatric patients, similar to reports in adults
Postviral ME/CFS may have a delayed presentation, appearing weeks after apparent viral recovery
Standard rehabilitation approaches may be insufficient for post-dengue ME/CFS
ME/CFS should be considered in the differential diagnosis of persistent symptoms following dengue infection
Remaining Questions
What percentage of dengue hemorrhagic fever survivors develop ME/CFS symptoms?
Are there host factors, genetic markers, or viral characteristics that predict who will develop post-dengue ME/CFS?
What This Study Does Not Prove
This single case cannot establish the frequency or mechanisms of ME/CFS development after dengue infection. It does not prove that dengue causes ME/CFS in all or most infected individuals, nor does it identify what distinguishes those who develop ME/CFS from those who recover normally. The study cannot determine optimal treatment approaches or predict long-term outcomes across larger populations.
Tags
Symptom:Cognitive DysfunctionPainFatigue
Biomarker:Blood Biomarker
Phenotype:Infection-TriggeredSeverePediatric
Method Flag:PEM Not DefinedWeak Case DefinitionNo ControlsSmall SampleExploratory Only