I appreciate what you are trying to do and have often thought how to communicate the exquisite pain cluster headaches produce. In reality, like a mystic psychedelic experience, it is ineffable, there are no words to describe the experience. There is no empathy except from another fellow clusterhead. The whole thing sucks beyond measure and to me it doesn't matter if anyone understands so I don't bother. Words always fall short. For the persistent soul who presses the issue I direct them to YouTube and Dan's national geographic appearance. The video does more than words could ever convey.