Hey Amphs
I went back and read this thread from the start.
I'll say again that I am not a doctor and that this is not a diagnosis.
I do have some questions and comments for you.
I am confused as to whether the headaches spread to your jaw OR is jaw pain a warning sign that you are about to have a headache. Can you clarify?
You say that once your headache starts the pain comes in waves lasting anywhere from 1,1/2hrs - 4hrs. You also mentioned having pain spikes that last from 1 - 2 minutes during these episodes. This sounds more like Hemicrania Continua. HC responds really well to treatment with Indomethacin which, by the way, is ALSO used to treat sexual headaches. How many separate headaches/episode? How many episodes/day? Is there any pattern of these episodes occurring at/around the same time every day? For example I had a CH wake me up from deep sleep 4 days in a row at exactly 3:34am every time.
You say you have no eye pain/tearing and no stuffed/runny nostril on your left side during your episodes. This tends to be much more common to CH than jaw pain. If you haven't already, check this site, clusterheadaches.com or the web for surveys/criteria for CH.
I am not saying that you don't have CH. It's just that headache conditions like CH, SUNCT, PH,HC etc. are difficult to diagnose. In less than a year I was misdiagnosed by a neurologist and told by my doctor (who had little/no knowledge of CH or how to treat it) that he couldn't write me a prescription for oxygen.
Just trying to help
Take care