Red and Orange Flags for Secondary Headaches in Clinical Practice: The SNNOOP10

While most patients with headaches have no secondary headache disorder, the presence of red-flag symptoms should prompt additional investigation for an underlying cause. Guidelines suggest adopting the updated systematic red-flag screening tool, SNNOOP10. This approach ensures red flags are identified and used to guide subsequent investigations.

Adapted from: Neurology 2018; 92(3):10.1212/WNL.0000000000006697.