I just came across this site and felt strongly compelled to share my experience.  My situation might be quite different then yours, this is not advice, just sharing. I am 58 at the moment, I started getting severe headaches over my left eye in my early 20's. It changed my life completely, I dropped out of college and had nothing but pain to look forward to, day-in and day-out. I later found out that what I believe I had was called, "Cluster Headaches," also referred to as Suicide Headaches." I went to several Neurosurgions, ENT specialist, Chiropracters, etc..
  For me, it ended up being meditation and prayer that worked. 
  I had listened to a tape about meditation and I felt, well I tried everything else.  I found through meditation and controlling my breathing, I could direct my blood flow, I started this process with focusing on my fingers first, one at a time.  I found I could push and pull my blood circulation  and pin pointed it where it hurt the most, which was over my left eye.  I meditated and prayed with all my heart.  I felt, what I can only explain as a popping sensation / blood circulation going down the leftside of my nose by my eye.  My headaches ended that morning and had been gone ever since.  I wish I could share the joy I get from something as trivial as looking at a cloud and not getting that piercing pain of yesterday.