RESUMEN
INTRODUCTION: In assessing the patient with headache, clinicians are often faced with 2 important questions: Is this headache a migraine? Does this patient require neuroimaging? The aim of this study was to assess the validity and applicability of the mnemonic POUNDing rule in patients diagnosed with migraine. PATIENTS AND METHODS: A descriptive, validation study of the POUNDing rule in patients with a diagnosis of migraines and with a brain imaging test (computed tomography or magnetic resonance imaging), in an urban health centre and a neurology clinic of the University Hospital of Badajoz. RESULTS: A total of 116 patients were included (mean age 45.6 years; 79.3% women, 70 from the neurology clinics, and 46 from the health centre). The best validity parameters of the POUNDing rule were its positive predictive values: 90.9% (95% CI: 57.1-99.5%), 100% (95% CI: 73.2-99.3%), and 96.0% (95% CI: 77.7-99.8%) in the patients of the neurology clinic, the health centre and in the total population, respectively, and its low negative predictive values: 6.8% (95% CI: 2.2-17.3%), 3.1% (95% CI: 0.2-18.0%), and 5.5% (95% CI: 2.0-12.9%), also respectively in the patients of the neurology clinic, the health centre and in the total population. CONCLUSIONS: The POUNDing mnemonic rule has a high positive predictive values and can be a great help in accepting or rejecting a diagnosis of migraine, facilitating a more efficient use of neuroimaging tests.