I have a friend who suffers from chronic cluster headaches.If you’re unfamiliar with cluster headaches (and hopefully you are), they are like migraines on steroids. Debilitating, stop-you-in-your-tracks, please-stick-a-need-in-my-eye intolerable pain. A few days ago, I was with him when he had one. Today we were talking and he said he wished I hadn’t seen that because it’s ugly and dark and scary and he thinks anyone who witnesses it would, and probably should, turn and run the other way, fast. I told him he’s been blessed with a very effective no-guts filter for use...















