Jones, E, Wessely, S · BMJ (Clinical research ed.) · 1999 · DOI
This historical research paper examines cases of chronic fatigue syndrome (then called different names) that occurred in soldiers during the Crimean War and Indian Mutiny in the 1800s. The authors looked back at medical records from these time periods to document how fatigue illnesses affected military personnel. This work shows that ME/CFS-like conditions are not new to modern times but have been documented for well over a century.
This historical perspective is important because it demonstrates that ME/CFS is not a recently invented or purely psychogenic condition unique to modern times. Understanding that similar fatigue syndromes have affected populations for over 150 years helps validate patient experiences and informs discussions about the biological basis of these conditions. Historical documentation also provides context for understanding how ME/CFS manifests across different time periods and populations.
This study does not prove that modern ME/CFS is identical to 19th-century fatigue syndromes, as diagnostic criteria have evolved significantly. It does not establish causation or determine why these conditions occurred, only that fatigue-based illnesses were documented historically. The reliance on historical records means specific diagnostic accuracy cannot be verified by contemporary standards.
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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