Mourad, S, Chidiac, J · Le Journal medical libanais. The Lebanese medical journal · 1969
This is an early observational study from 1969 describing cases of benign myalgic encephalomyelitis in Lebanon. The researchers documented patients with this condition, contributing to recognition of ME/CFS as a distinct illness in the Middle East during a period when the disease was still being identified and named around the world.
Early international case descriptions like this are historically important for establishing that ME/CFS is a genuine, globally recognized illness rather than a localized or culturally-bound condition. This 1969 Lebanese documentation helps demonstrate the disease's widespread presence across continents and decades, strengthening the case for ME/CFS as a legitimate medical entity.
This observational study cannot establish causation, prevalence, disease mechanisms, or outcomes without comparison groups or systematic data collection. It does not provide evidence about etiology, pathophysiology, or optimal treatments, and the absence of an abstract limits understanding of what specific clinical findings were actually reported.
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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