Knight, Sarah, Harvey, Adrienne, Lubitz, Lionel et al. · Journal of paediatrics and child health · 2013 · DOI
This study looked at 59 young people (average age 15) diagnosed with ME/CFS at a specialist clinic in Australia to understand how the illness affects them and how long it takes to get diagnosed. Researchers found that young people typically wait over a year after their symptoms start before getting a diagnosis, and most experience significant problems with school attendance and daily activities. The most common symptoms included extreme tiredness, sleep problems, pain, and difficulty thinking clearly.
This study highlights a critical gap in pediatric ME/CFS care: the substantial delay between symptom onset and diagnosis, during which young patients experience significant functional decline and potential disease progression. Understanding these presentation patterns and diagnostic barriers is essential for improving early recognition, reducing suffering, and developing better management strategies for children with ME/CFS.
This study does not establish causation for any symptoms or identify what causes ME/CFS. It cannot prove that the diagnostic delay itself worsens outcomes, only that it occurs. The findings are specific to one Australian tertiary center and may not generalize to other populations or healthcare systems.
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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