Paroxysms of severe unilateral pain in<unk>  nerve distribution lasting only seconds
Normal neuro exam
No pain between paroxysms
Variant with headache
More common in Middle aged women
Frequently triggered by minimal stimuli (e.g. light touch, gentle breeze)
Trigeminal neuralgia
Migraine headache
Tension headache
Cluster headache
Meningitis/encephalitis
Post-lumbar puncture headache
Neoplastic meningitis
Heat syncope