"NÃO É PRIMÁRIA": a Portuguese version of the SNNOOP10 mnemonic.

Secondary headaches arise from underlying medical conditions and are associated with significant morbidity and mortality. Their diagnosis relies primarily on a comprehensive clinical history and a thorough physical examination, both aimed at identifying key warning signs. The SNNOOP10 mnemonic is a widely-recognized tool used to screen for potential secondary causes of headache. It consists of a structured checklist of 15 red flags, with validated sensitivity, specificity, and predictive values. However, the original English version may present challenges for healthcare providers who are non-native English speakers.To introduce a culturally-adapted version of the SNNOOP10 mnemonic in Portuguese: "NÃO É PRIMÁRIA" ("IT IS NOT PRIMARY").The authors reorganized the SNNOOP10 red flags into "NÃO É PRIMÁRIA" by semantically grouping related items, assigning each letter to a corresponding clinical element and matching the original red flags into each letter of the new acronym. A comparative table and image were developed to ensure clarity.The new mnemonic covers all reorganized items of the SNNOOP10 adapted for Portuguese speakers."NÃO É PRIMÁRIA" is a practical mnemonic that adapts THE SNNOOP10 for Portuguese-speaking settings, based on clinical experience. It requires formal validation, and future studies should assess its diagnostic accuracy and applicability.