Joe Fernando Muñoz-CerónVarinia Marin-CareagaLaura PeñaJorge MutisGloria Ortiz2026-03-222026-03-22201910.1371/journal.pone.0208728https://doi.org/10.1371/journal.pone.0208728https://andeanlibrary.org/handle/123456789/43439Citaciones: 94This data suggests that fulfilling ICHD 3 criteria could be useful to differentiate primary from non-primary headaches. This observation is also valid for immunosuppression, age older than 50, history of migraine and history of similar episodes.enHeadachesMedicineEmergency departmentInternational Classification of Headache DisordersEtiologyPrimary headachePediatricsTriageHeadache at the emergency room: Etiologies, diagnostic usefulness of the ICHD 3 criteria, red and green flagsarticle