I've had tension headaches and migranes on average twice a weekfor donkeys years, and I had my first cluster headache in november. first time wasn't so bad, but I thought i'd been whacked on the head with an iron bar. I thought I got mugged, until it clustered again a few minutes later and I googled it. I've just had the second, it was the most painful thing I've ever had in my life, about four bursts spred over two hours. how do I stop these bloody things short of putting a bullet through my head?