A styloid only 1.9mm from the C1 process is making a really tiny gap! So very likely that it would be compressing the Internal Jugular Vein I would think- have you got any vascular ES symptoms like dizziness, off-balance feeling, head pressure? The vagus nerve is close too so that could potentially be compressed which can cause anxiety, digestion issues or cardiac arrhythmias… Having an artery wrapped around your styloid could perhaps cause symptoms like dizziness, eye pain, fainting or stroke like symptoms… The 10mm gap sounds less likely to be compressing anything between the styloid & transverse process, but the angle of the styloid can still irritate nerves, that needs to be considered too. Ear & throat pain are possibly caused by the glossopharyngeal nerve, the vagus nerve which are commonly compressed by the styloids. There’s some info here:
Obviously we can’t say for sure that your symptoms will resolve after surgery, and no doctor will guarantee this… personally, it would worry me that an artery is tangled with the styloid process, and I would want to have the styloid removed with as competent doctor as I could. When I had nerve pain from ES I could manage that with medication and heat, but it sounds as if your pain is way worse than mine was. It was when the vascular symptoms started I made the decision to have surgery. But it’s a difficult decision to make when you have to travel abroad for surgery and have to pay for it!
Also did you het to ask about your hyoid bone & whether in his opinion it might be causing some issues?