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KMID : 1130620160120030316
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Journal of Clinical Neurology
2016 Volume.12 No. 3 p.316 ~ p.322
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Chronic Daily Headache and Medication Overuse Headache in First-Visit Headache Patients in Korea: A Multicenter Clinic-Based Study
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Cha Myoung-Jin
Moon Heui-Soo
Sohn Jong-Hee
Kim Byung-Su
Song Tae-Jin
Kim Jae-Moon
Park Jeong-Wook
Park Kwang-Yeol
Kim Soo-Kyoung
Kim Byung-Kun
Cho Soo-Jin
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Abstract
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Background and Purpose : Chronic daily headache (CDH) is defined as a headache disorder in which headaches occur on a daily or near-daily basis (at least 15 days/month) for more than 3 months. Chronic migraine (CM) and medication overuse headache (MOH) are very disabling headaches that remain underdiagnosed. The aim of this study was to establish the frequency of CDH and its various subtypes, and examine the associations with MOH among first-visit headache patients presenting at neurology outpatient clinics in Korea.
Methods : Eleven neurologists enrolled first-visit patients with complaints of headaches into outpatient clinics for further assessment. Headache disorders were classified according to the International Classification of Headache Disorder (third edition beta version) by each investigator.
Results : Primary CDH was present in 248 (15.2%) of the 1,627 included patients, comprising CM (143, 8.8%), chronic tension-type headache (CTTH) (98, 6%), and definite new daily persistent headache (NDPH) (7, 0.4%). MOH was associated with headache in 81 patients (5%). The association with MOH was stronger among CM patients (34.5%) than patients with CTTH (13.3%) or NDPH (14.3%) (p=0.001). The frequency of CDH did not differ between secondary and tertiary referral hospitals.
Conclusions : The frequencies of CDH and MOH diagnoses were 15.2% and 5%, respectively in first-visit headache patients presented at secondary or tertiary referral hospitals in Korea. CM was the most common subtype of CDH and was most frequently associated with MOH.
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KEYWORD
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chronic daily headache, epidemiology, medication overuse headache, migraine, tension-type headache, headache
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