While I was ranting to my sister about my recent doctor appointment - she (dr.) practically laughed at me for asking for a prescription for O2, but suggested other drugs and wants me to see a neurologist. (already had a scan, my brain's fine) I came up with a question. These drugs that they say work for cluster headaches (lithium, prednisone, triptans, etc.) - who do they work for? They didn't work for me (was at the ER twice, big waste of time) and doesn't sound like they worked for anyone else around here either.