Calabrese, L, Danao, T, Camara, E et al. · American family physician · 1992
ME/CFS is a condition where people experience severe, disabling tiredness that starts suddenly and lasts at least six months, often getting worse with physical activity. Patients often have fever, sore throat, and tender lymph nodes, along with sleep problems and muscle pain. Treatment focuses on education, support, gentle exercise, and managing individual symptoms like sleep issues and pain.
This early clinical review helped establish diagnostic criteria and management frameworks for ME/CFS in primary care settings, validating patients' experiences of a real medical condition. It highlights the importance of recognizing the post-exertional nature of fatigue and the role of immunologic dysfunction, which remains central to modern ME/CFS research and clinical understanding.
This review does not establish causal mechanisms for ME/CFS or prove which immunologic abnormalities are primary versus secondary. It does not provide controlled data on treatment efficacy or outcomes, nor does it clarify the relationship between viral triggers and chronic immune dysfunction. The article reflects 1992 knowledge and does not address more recent diagnostic classifications or controversies.
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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