A meta-analysis found that symptoms followed a circadian pattern in 71% of cluster headache patients.
Notes on verification
Confirmed by peer-reviewed Neurology meta-analysis (Burish et al. 2023) reporting 70.5% (rounded to 71%), corroborated by AAN press release and multiple independent medical news outlets. [cascade flags: aggregator_dropped_primary_exists | tier=unverified indep_score=0.3 clusters=3 claim_tier=notable] [rescored 2026-09-15: curated origin-host map (PR #65); unclassified hosts no longer scored as aggregators]
Sources
- Migraine and Cluster Headaches are Linked to the Body's Internal ... (seed:health_and_medicine)
- https://www.neurology.org/doi/10.1212/WNL.0000000000207240 (corroboration)
- https://www.aan.com/PressRoom/Home/PressRelease/5067 (corroboration)
- https://www.news-medical.net/news/20230329/Cluster-headache-and-migraine-are-stronly-linked-to-the-circadian-system.aspx (corroboration)