Walther, H · Schweizerische Rundschau fur Medizin Praxis = Revue suisse de medecine Praxis · 1972
This 1972 case study describes an outbreak of myalgic encephalomyelitis (ME), a serious illness causing muscle pain, brain inflammation, and extreme fatigue. The author documented patients who experienced this epidemic, helping early medical professionals recognize and understand the disease pattern.
Early clinical descriptions of ME/CFS epidemics were crucial for establishing the disease as a recognizable medical condition rather than psychiatric illness. This historical documentation contributes to understanding ME/CFS's emergence and validation as an organic neurological disorder.
This observational study does not establish causation or identify the etiology of ME/CFS. It does not prove the epidemic had a single infectious cause, nor does it provide evidence for specific pathophysiological mechanisms. The lack of controls and objective testing prevents conclusions about disease mechanisms or transmission routes.
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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