What's a good fix for a terrible migraine / cluster headache?

Sumatriptan sc 6 mg: Provides rapid relief for about 80%.

Headache specialist: There is a difference between the two. A good history and physical examination will determine which of the two you have. Medications such as Imitrex (sumatriptan) are a good start. Some patients with migraine benefit from nerve blocks or botox. For both cluster and migraine, there are surgical procedures and nerve stimulators that can offer long lasting relief in the right patients.