Godwin, M, Delva, D, Miller, K et al. · Canadian family physician Medecin de famille canadien · 1999
This guideline helps family doctors systematically evaluate adults who come to them complaining of fatigue lasting less than 6 months. Rather than ordering many expensive tests, the guidelines recommend doctors first talk with patients about their symptoms and do a physical exam, paying special attention to psychological and social factors that might cause tiredness. The guideline then tells doctors which tests to consider based on what they find.
For ME/CFS patients, this guideline is relevant because it establishes a framework for distinguishing acute fatigue (less than 6 months) from chronic conditions. Understanding how primary care physicians should approach recent-onset fatigue helps clarify what assessments and diagnoses might be appropriate before ME/CFS is suspected, and it highlights the importance of psychosocial evaluation in the diagnostic process.
This guideline does not establish criteria for diagnosing ME/CFS, nor does it address fatigue persisting beyond 6 months. It does not prove that psychosocial causes are the primary driver of all fatigue presentations, and it lacks the rigorous prospective evidence (Level 1–2 studies) needed to definitively validate the recommended approach in clinical practice.
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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