Sorry to hear that your last surgery hasn’t helped- that’s really rough…
If you get yourself as well-informed as you can, then that’s helpful- there’s lots of info in the Newbies Guide, & also links to research papers.
Do you know why the other surgeries weren’t sucessful? Have they not removed much of the styloid process? If you’ve had a more recent CT it would be helpful as any evaluation could show up what the problem is. ES can be caused by either an elongated styloid process, or calcified stylo-hyoid ligaments, or both, so it would be useful to know which you had previously, & what they removed at your surgeries. The most common reason why surgery fails is because the surgeon hasn’t removed enough of the styloid process (external surgery generally gives a better view so that more can be removed), but we’ve also had members who’ve had pieces left in, the end of the styloid not smoothed off, & calcified ligaments detached but left in… As you’ve found out, the SP can re-grow, so to take it back as far as possible is best.
So you need to make sure that the doctor will remove as much of the styloid process as safely possible, preferably right up to the skull base (which a skull base surgeon will be able to do if you’re seeing one of them). If you have calcified ligaments, make sure those will be removed as well, & I would also be worried about scar tissue as well as you’ve had several surgeries; could scar tissue be causing some of your pain? You could also ask about swelling post-op; some doctors put a drip in or prescribe steroids to reduce it.
I can’t think of anything else, but good luck!