High-flow O2 (effective in 70% of patients)
Intranasal lidocaine 4%
DHE
Sumatriptan
Intranasal zolmitriptan
Subcutaneous or IM dihydroergotamine and intranasal sumatriptan are additional options
Verapamil can be used for prophylaxis
Prednisone taper with verapamil has shown to reduce frequency of attacks
Cluster headache
Migraine headache
Tension headache
Benign paroxysmal positional vertigo
Meningitis/encephalitis
Post-lumbar puncture headache
Neoplastic meningitis
Giant cell arteritis