Cluster Headaches: The Worst Possible Pain? (2013)

I'm 75, and have gone through several painful surgical procedures.

There is no pain worse than a cluster headache that I have experienced, so far. The only good thing about a cluster headache is that each one only lasts several hours. The very bad thing is that they come on like clockwork, at (for me) 1pm every day for months.

For me, they are stress induced. Luckily, I have not been stressed badly in quite a while.