Headache Primary Migraine* Aura Severe, throbbing Interferes with routine activities Nausea or vomiting Photophobia/phonophobia Tension* Mild to moderate Pressure or tightness Non-throbbing Usually bilateral Other Primary exertional headache Trigeminal autonomic cephalalgias Secondary Infection Fever Toxic meningismus Focal neurological signs Meningitis, Encephalitis, Brain Abscess Vascular Sudden onset ↑ ICP or focal neurological signs Hemorrhagic or ischemic stroke Ruptured AVM Immune-mediated vasculitis Metabolic disease causing stroke Mass/Structural Morning headache Worse with Valsalva Signs of ↑ ICP or focal neurological signs Brain tumor, Hydrocephalus Trauma Primary head/neck trauma Abusive head trauma, Concussion Other Sinusitis Idiopathic intracranial hypertension Hypertension Medication overuse

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