Chen, Chao-Hsien, Yang, Tse-Yen, Lin, Cheng-Li et al. · Medicine · 2016 · DOI
This study found that people with fibromyalgia are more likely to develop dry eye syndrome than people without fibromyalgia. Younger fibromyalgia patients (under 50) and those with sleep problems or other conditions like irritable bowel syndrome had even higher risks of developing dry eyes. The researchers used health insurance records from Taiwan to track over 25,000 fibromyalgia patients and compare them to over 100,000 people without fibromyalgia.
ME/CFS shares significant clinical overlap with fibromyalgia, including chronic pain, fatigue, and associated autonomic and psychiatric symptoms. Understanding the mechanisms linking FM to secondary conditions like dry eye—potentially through shared neurobiological pathways involving immune dysfunction, autonomic dysregulation, or sleep disturbance—may illuminate similar processes in ME/CFS and guide comprehensive clinical assessment and management strategies.
This study demonstrates association, not causation; it does not explain the biological mechanisms linking fibromyalgia to dry eye syndrome. The study cannot establish whether fibromyalgia directly causes DES or whether both conditions result from a shared underlying pathology. Additionally, findings from a Taiwanese population may not generalize to other geographic or ethnic populations.
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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