Pinardi, G, Scarlato, G · Recenti progressi in medicina · 1990
This review describes ME/CFS as a complex condition marked by severe, long-lasting fatigue accompanied by symptoms like sore throat, headaches, muscle pain, and mood changes. While researchers have suspected viruses like Epstein-Barr virus might cause it, the evidence hasn't been convincing due to study design problems. The authors suggest the condition may result from an abnormal immune response rather than a single virus.
This review highlights a critical gap in ME/CFS research that persisted in 1990: the lack of standardized diagnostic criteria and methodologically sound studies. By identifying these foundational problems, it underscores why progress in understanding and treating ME/CFS requires better research infrastructure—a lesson relevant to current efforts to establish consistent case definitions and investigate immune dysfunction.
This review does not prove that any specific virus causes ME/CFS, nor does it establish that immune dysfunction is definitively responsible—it only suggests this as a more likely hypothesis than single-virus infection. The authors acknowledge that existing viral studies were too methodologically flawed to draw firm conclusions. This is a critical review, not a primary research study with new data.
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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