New hope for cluster headaches - CNN (video)

CNN's Dr. Sanjay Gupta reports on a new way to relieve the pain caused by cluster headaches.
- the worse type of headaches that happen several times a day, for weeks, and months
- researches believe the headaches origin from the hypothalamus
- 100% oxygen seems to be the best solution or peace of advice from Dr. Sanjay Gupta for 80% of the people.