Innes, S G · Lancet (London, England) · 1970 · DOI
This 1970 case report described patients with symptoms resembling myalgic encephalomyelitis (ME), including muscle pain, fatigue, and neurological symptoms. The study documented clinical presentations that looked similar to what we now call ME/CFS, helping establish early recognition of this condition in medical literature.
This early clinical documentation helped establish ME/CFS as a recognized medical entity in peer-reviewed literature. Such foundational case descriptions were crucial for validating that the condition existed and warranted serious medical investigation, laying groundwork for future research.
This study does not establish the cause of ME/CFS or identify specific biological mechanisms underlying the disease. Case reports cannot determine prevalence, natural history, or compare treatments. The findings are descriptive rather than mechanistic and do not prove any particular etiology.
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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