So sorry that you’re feeling so dizzy. It can happen with Vascular ES, but I can’t think of anyone who has had that as their only symptom- I might be wrong though! When dizziness and fainting is caused by carotid compression from the styloids, it’s often when the head is in certain positions, if someone looks sideways for example. Dizziness from jugular compression is often accompanied by other symptoms like head pressure, it can be more of an off balance feeling, and lying down can often make the head pressure worse. (There’s info about the vascular symptoms in here:
ES Information: Common Symptoms And Possible Explanations For Them - Welcome / Newbies Guide to Eagle Syndrome - Living with Eagle
Rather than an MRI with contrast- the contrast medium used can cause adverse effects as @vdm has posted about- and as MRIs don’t show the styloids as well, a CT with contrast would be better to see if there’s been any regrowth.
Let us know how you get on 