Barsky, A J, Borus, J F · Annals of internal medicine · 1999 · DOI
This 1999 editorial discusses how several chronic conditions—including ME/CFS, fibromyalgia, and irritable bowel syndrome—share common features: they cause real suffering and disability, but standard medical tests often don't find clear tissue damage. The authors suggest that a self-reinforcing cycle develops where patients become convinced they have a serious disease, their symptoms worsen over time, and this belief itself amplifies their suffering, even when psychological and social factors play a role.
This editorial is significant for ME/CFS patients and researchers because it highlights how social, medical, and psychological contexts can amplify symptom burden independent of underlying biology. Understanding these feedback loops may help clinicians avoid dismissing real suffering while recognizing that validation, clear communication, and psychosocial support are legitimate therapeutic tools alongside biomedical investigation.
This editorial does not prove that ME/CFS is primarily psychological or that patient beliefs cause the disease. It also does not establish causality or provide original empirical data; it presents a conceptual framework that may oversimplify heterogeneous conditions and does not prove that biomedical abnormalities are absent in all patients with functional somatic syndromes.
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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