Lindan, R · Canadian Medical Association journal · 1956
This 1956 paper by Lindan describes a condition called benign myalgic encephalomyelitis, an early medical account of what we now know as ME/CFS. The paper helped establish that this illness was a real medical condition worthy of clinical attention, rather than a psychological problem. It represents one of the early attempts to formally document and name the disease in medical literature.
This paper is historically significant as it represents one of the first formal medical descriptions of ME/CFS in peer-reviewed literature, helping legitimize the condition as a medical entity rather than a psychiatric diagnosis. Early recognition and naming of diseases is crucial for establishing clinical credibility and motivating future research. This work contributed to the growing body of evidence that ME/CFS is a distinct biological illness.
This study does not establish the cause of ME/CFS, its pathophysiology, or prevalence. As an early descriptive account without systematic methodology, it cannot prove diagnostic criteria, prognosis, or treatment efficacy. The lack of control groups and formal data collection means it provides clinical observations rather than experimental evidence.
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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