“What are the alarming symptoms of headache? (JAMA RCE, send for imaging)”,”SNOOP2Systemic symptoms or illness (constitutional, scalp tenderness, jaw claudication, malignancy, HIV)Neurologic symptomsOnset of Thunderclap headache (max intensity within 60 minutes) Older age of onset (after 50)Postural changes (Valsalva
exertion)Progressive worsening”