Larkin, Derek, Martin, Colin R · Neurophysiologie clinique = Clinical neurophysiology · 2017 · DOI
Many people with ME/CFS experience depression alongside their physical symptoms, but it's unclear whether depression causes the fatigue, results from it, or whether they share common underlying biological causes. This paper reviews what we know about the connection between ME/CFS and depression, examining possible explanations from brain function, immune system activity, and psychological factors. Understanding this relationship better could help doctors develop more effective treatments that address both the fatigue and mood symptoms.
Depression significantly impacts quality of life and treatment outcomes in ME/CFS patients, yet the relationship between these conditions remains poorly understood. By examining multiple potential biological mechanisms linking ME/CFS and depression, this work helps clinicians and researchers develop more comprehensive, evidence-based interventions that address both the neurological symptoms and mood disturbances patients experience.
This review does not establish causal relationships between ME/CFS and depression—it cannot determine whether depression causes fatigue, results from it, or whether both stem from shared biological mechanisms. The paper synthesizes existing literature rather than presenting new experimental data, so it cannot prove any specific mechanism is responsible for the observed relationship. It also does not definitively identify which patients with ME/CFS will develop depression or predict treatment response.
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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