Paredes, Stephania, Cantillo, Santiago, Candido, Kenneth D et al. · International journal of molecular sciences · 2019 · DOI
This review article explains how a brain chemical called serotonin affects pain perception, and how female hormones (estrogens) can influence serotonin levels. The authors examine the connection between serotonin, hormones, and several pain conditions including irritable bowel syndrome, fibromyalgia, and migraines. They suggest that targeting serotonin and hormone pathways might offer new treatment options for pain in the future.
ME/CFS patients often experience significant pain, including headaches, muscle pain, and gastrointestinal symptoms that overlap with the disorders reviewed here. Understanding serotonin's role in pain perception and how sex hormones modulate this system could inform new therapeutic approaches for ME/CFS pain management. This review highlights why sex-specific treatment strategies and attention to hormone-pain interactions may be important for ME/CFS research and clinical care.
This literature review does not establish causal relationships between serotonin, estrogen, and ME/CFS specifically—it synthesizes evidence on related pain disorders. The review does not present new experimental data or clinical trials demonstrating efficacy of serotonin-modulating treatments in ME/CFS patients. Observational associations between serotonin levels and pain perception do not prove serotonin dysfunction is the primary cause of ME/CFS pain.
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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