Depressive symptoms in adolescents with chronic fatigue syndrome (CFS): Are rates higher than in controls and do depressive symptoms affect outcome? — CFSMEATLAS
Depressive symptoms in adolescents with chronic fatigue syndrome (CFS): Are rates higher than in controls and do depressive symptoms affect outcome?
Loades, Maria Elizabeth, Rimes, Katharine A, Ali, Sheila et al. · Clinical child psychology and psychiatry · 2019 · DOI
Quick Summary
This study compared depression symptoms in adolescents with ME/CFS to healthy teenagers and teenagers with asthma. Young people with ME/CFS had significantly higher depression scores than both groups. While depression symptoms were linked to some worsening of fatigue over time, they were a stronger predictor of future depression itself, suggesting depression may be a separate concern that needs its own treatment approach.
Why It Matters
This study demonstrates that depression in adolescent ME/CFS is both more prevalent than in healthy peers and other chronic illnesses, and appears to persist without treatment. Understanding that depression may require targeted intervention alongside ME/CFS treatment is crucial for comprehensive clinical care and improved outcomes in young patients.
Observed Findings
Adolescents with CFS scored significantly higher on all Children's Depression Inventory subscales compared to healthy controls and asthma controls.
Depression scores explained 11% of the variance in subsequent fatigue severity.
Depression scores explained only 1.9% of the variance in subsequent physical functioning.
Depression scores explained 68% of the variance in subsequent depression scores.
68% of CFS participants completed follow-up assessments at their first treatment session.
Inferred Conclusions
Depressive symptoms are a more prominent feature of adolescent CFS than in healthy peers or those with other chronic illnesses like asthma.
Depression in CFS appears to persist over time when no treatment is provided.
Depression may need to be addressed as a distinct treatment target alongside fatigue and physical functioning in adolescent CFS.
Further research should stratify treatment outcomes by depression status to identify effective interventions for depression in this population.
Remaining Questions
What is the direction of causality between depression and ME/CFS—does depression worsen fatigue, does fatigue lead to depression, or are they independently triggered by the same underlying biological process?
What This Study Does Not Prove
This study does not establish whether depression causes ME/CFS fatigue, results from it, or is an independent co-occurring condition. The correlational design cannot determine causality. Additionally, the naturalistic follow-up without intervention prevents conclusions about what treatments would be most effective for depression in this population.
Tags
Symptom:Fatigue
Phenotype:Pediatric
Method Flag:PEM Not DefinedWeak Case DefinitionSmall Sample
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 →