{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,4]],"date-time":"2026-08-04T19:41:33Z","timestamp":1785872493693,"version":"3.56.0"},"reference-count":60,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2026,2,27]],"date-time":"2026-02-27T00:00:00Z","timestamp":1772150400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Clocks &amp; Sleep"],"abstract":"<jats:p>Sleep disorders and primary headache syndromes frequently coexist, and accumulating evidence suggests that this relationship is bidirectional and biologically mediated rather than coincidental. Patients with migraine, tension-type headache, and cluster headache commonly report poor sleep quality, insomnia symptoms, and irregular sleep patterns, while individuals with sleep disorders such as insomnia, obstructive sleep apnea, restless legs syndrome, and narcolepsy experience a higher prevalence, severity, and chronification of headache disorders. This narrative review synthesizes current clinical, epidemiologic, and translational evidence supporting shared neurobiological mechanisms linking sleep and headache disorders. We focus on five major overlapping pathways: dopaminergic dysfunction, iron deficiency, hypothalamic and circadian dysregulation, central sensitization, and neuroinflammation. Evidence from population-based studies, clinical cohorts, neuroimaging, genetic research, and experimental models demonstrates that these mechanisms converge within hypothalamic, brainstem, and trigeminovascular circuits that regulate arousal, pain processing, and homeostasis. Conditions such as insomnia, obstructive sleep apnea, restless legs syndrome, and circadian disruption not only exacerbate headache burden but may act as modifiable risk factors that promote headache onset and progression. Recognizing sleep disorders as integral components of headache pathophysiology has important clinical implications, emphasizing the need for systematic sleep assessment and targeted sleep interventions as part of comprehensive headache management strategies.<\/jats:p>","DOI":"10.3390\/clockssleep8010011","type":"journal-article","created":{"date-parts":[[2026,2,27]],"date-time":"2026-02-27T11:22:57Z","timestamp":1772191377000},"page":"11","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Mechanistic Overlaps Between Sleep and Headache Disorders: From Dopaminergic Dysfunction to Neuroinflammation\u2014A Narrative Review"],"prefix":"10.3390","volume":"8","author":[{"given":"Miller","family":"Martinez","sequence":"first","affiliation":[{"name":"School of Medicine, Universidad Nacional Nueva Granada, Bogota 110111, Colombia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-6031-2323","authenticated-orcid":false,"given":"Frank","family":"Villarreal","sequence":"additional","affiliation":[{"name":"Department of Neurology, Clinica Ricardo Palma, Lima 15036, Peru"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3349-8426","authenticated-orcid":false,"given":"Lourdes M.","family":"DelRosso","sequence":"additional","affiliation":[{"name":"Department of Family and Community Medicine, University of California San Francisco, Fresno, CA 93710, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,2,27]]},"reference":[{"key":"ref_1","first-page":"971","article-title":"Association Between Insomnia and Migraine Risk: A Case-Control and Bidirectional Mendelian Randomization Study","volume":"14","author":"Chu","year":"2021","journal-title":"Pharmgenom. 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