• Espen Saxhaug Kristoffersen, Knut Stavem, Christofer Lundqvist, and Michael Bjørn Russell.
• Head and Neck Research Group, Research Centre, Akershus University Hospital, PO Box 95, 1478, Lørenskog, Norway. e.s.kristoffersen@medisin.uio.no.
• J Headache Pain. 2017 Aug 16; 18 (1): 85.

BackgroundExcessive daytime sleepiness (EDS, defined as Epworth sleepiness scale score > 10) is a common symptom, with a prevalence of 10-20% in the general population. It is associated with headache and other chronic pain disorders. However, little is known about the prevalence of EDS among people with secondary chronic headaches.FindingsA total of 30,000 persons aged 30-44 from the general population was screened for headache by a questionnaire. The 633 eligible participants with self-reported chronic headache were interviewed and examined by a headache specialist who applied the International Classification of Headache Disorders with supplementary definitions for chronic rhinosinusitis and cervicogenic headache. A total of 93 participants had secondary chronic headache and completed the ESS. A total of 47 participants had chronic post-traumatic headache (CPTH) and/or cervicogenic headache (CEH), 39 participants had headache attributed to chronic rhinosinusitis (HACRS), while 7 had other secondary headaches. 23.3% of those with CPTH, CEH or HACRS reported EDS. In multivariable logistic regression analysis the odds ratios of EDS were not significantly different in people with CPTH/CEH or HACRS.ConclusionAlmost one out of four subjects with secondary chronic headache reported EDS with no differences between the various secondary chronic headaches.

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