Korszun, A · Current rheumatology reports · 2000 · DOI
Fibromyalgia is a condition causing widespread muscle pain along with sleep problems and extreme tiredness. This review examines how broken sleep patterns and disrupted body clocks (which control things like stress hormones) play a role in fibromyalgia. The authors suggest that treating sleep disorders, depression, and improving sleep habits—along with careful use of medications—may help relieve symptoms.
For ME/CFS patients, this review is important because it recognizes that sleep disturbance and circadian dysregulation are core features shared across fibromyalgia, CFS, and depression—conditions that frequently co-occur. Understanding how sleep and circadian rhythm problems contribute to these overlapping syndromes can inform treatment strategies that target underlying biological mechanisms rather than symptoms alone.
This review does not establish causation or determine whether circadian disruption causes fibromyalgia symptoms or results from them. It does not present new primary data and cannot prove that the proposed therapeutic approach is effective, as it offers clinical recommendations rather than evidence from randomized controlled trials. The review also does not clarify whether sleep/circadian dysfunction is specific to fibromyalgia or a shared feature of stress-related disorders generally.
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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