• Sarah Darcy, Emmet Kelly, Denise Choong, Allan McCarthy, Sean O'Dowd, Petya Bogdanova-Mihaylova, and Sinéad M Murphy.
• Department of Neurology, Tallaght University Hospital, Dublin 24, Tallaght, Ireland. darcysa@tcd.ie.
• Ir J Med Sci. 2024 Feb 1; 193 (1): 397405397-405.

BackgroundHeadache represents a significant proportion of disability globally in general practice, neurology outpatient settings, and emergency departments. There is scant literature regarding the impact of headache on healthcare services in Ireland.AimsWe aimed to investigate headache burden across the emergency department, inpatient stays, and neurology outpatient department referrals in an Irish University teaching hospital.MethodsWe prospectively collected data regarding emergency department presentations, inpatient neurology consultations, and neurology outpatient referrals for patients with headache between 13th January and 8th March 2020. Data were analyzed using descriptive statistics.ResultsThere were 180 emergency department attendances, 50 inpatient consultations, and 76 outpatient referrals with headache. Neurological examinations were often incomplete; neuroimaging was commonly employed. Migraine was the most frequent headache diagnosis at discharge in the emergency department and among inpatients after neurology review. Diagnostic uncertainty was identified-33% of patients left the emergency department with no diagnosis, and "unknown/unspecified headache" was recorded on 49% of outpatient referrals and 30% of inpatient consult requests. Medication overuse headache coexisted with migraine in nine patients in the inpatient group. Prophylaxis had been trialed in 56% of patients with migraine referred to outpatients.ConclusionsPrimary headache disorders have a large impact on hospital services. Diagnostic uncertainty is common; neuroimaging is relied upon. Appropriate care pathways, education, and resource allocation should be prioritized.© 2023. The Author(s).

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