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Headache "Red Flag"
|SNOOP||System symptoms, Neurologic signs & symptoms, Onset, Onset (age at onset), Previous History|
|System symptoms||Fever Weight loss Secondary headache risk factors - eg. HIV, Anticoagulation, Pregnancy|
|Neurologic signs & symptoms||Any newly acquired neurologic finding - Confusion, impaired alertness/ consciousness, nuchal(neck) rigidity, HTN, papilledema (optic nerve), CN dysfunction, abnormal motor function|
|Onset||Sudden, abrupt, split-second, "thunderclap" headache (suggests subarachnoid hemorrhage, sudden onset increased ICP) Onset of HA with exertion, sexual activity, coughing, sneezing|
|Onset (age at onset)||older (>50Y) and Younger (0-5Y)|
|Previous History||First Headache in adult (>30) [pattern usually established (<30)] New onset of different HA (change in frequency, severity, clinical features including: progressive HA w/o HA free period)|