<aside> 💡 occur when any of the pain-sensitive structures in the head and neck are stimulated. These include the meninges, blood vessels, nerves, and muscles.

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Important to hear story (acute, chronic, episodic, continuous, trigger)

Important causes

• Migraine – nausea, aura, heMI-CRANia
• Tension headache – bifrontal band, no nausea
• SAH – syncope, sudden worse headache, CT / LP
• Brain tumour – night/morning headache, cancer
• Meningitis / Encephalitis – triad, DRAPE

• acute onset, one episode

• Subacute onset of a continuous episode

• important exam findings

Red Flags