[Chronic fatigue syndrome. Clinical, social psychological problems and management].
Wessely, S · L'Encephale · 1994
Quick Summary
This review examines ME/CFS by comparing it to an older condition called neurasthenia and explores what causes the illness. The authors suggest that ME/CFS likely involves multiple factors including brain chemistry changes, difficulty perceiving effort, mood problems, and reduced physical activity—rather than being purely psychological or a muscle problem. They recommend cognitive-behavioral therapy (gradual activity increase) and antidepressants as the main treatments, while warning that too much rest can actually make the condition worse long-term.
Why It Matters
This review addresses the long-standing debate about ME/CFS etiology and management during a period of significant controversy in the field. By proposing a multifactorial model and questioning the role of excessive rest, it contributes to evolving clinical perspectives on how the condition should be approached therapeutically.
Observed Findings
ME/CFS shares symbolic and therapeutic characteristics with the historical diagnosis of neurasthenia
Fatigue in ME/CFS is unlikely to be hysterical or purely neuromuscular in origin
Short-term sleep may be beneficial but can contribute to long-term chronicity if excessive
Antidepressants are identified as the only pharmacologically justified treatment at the time of writing
Cognitive distortions appear to be relevant to the condition's maintenance
Inferred Conclusions
ME/CFS likely results from multiple interacting factors including brain neurochemistry, immune dysfunction, effort perception problems, mood disturbance, and physical deconditioning
Inappropriate care and ineffective treatment worsen disability
Cognitive-behavioral therapy with progressive activity resumption is a recommended therapeutic approach
Prolonged rest may paradoxically perpetuate or worsen the chronic condition
Remaining Questions
What is the relative contribution of each proposed factor (neurobiochemistry, immune dysfunction, effort perception, mood, deconditioning) to ME/CFS presentation and severity?
What This Study Does Not Prove
This review does not provide empirical evidence for its proposed multifactorial model, as it is a narrative synthesis rather than a controlled study. It does not establish causal relationships between the proposed factors and ME/CFS, nor does it present comparative efficacy data for the recommended treatments. The reliance on historical comparison with neurasthenia does not prove mechanistic similarity between the conditions.
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 →