@Anon - You did a fine job of providing a couple of 3D images. Your styloids aren’t super long, but they are very thick at the skull base & look pretty pointed. The left one looks like it’s curving inward a bit, too. I can’t tell if you have IJV compression because there isn’t enough of the IJV visible in either picture. Is there a way you can zoom out a little in the pictures to show more of your neck? With what I see, I think your styloids could definitely be contributing to your symptoms.
It also looks like you may have an arcuate foramen on the left side of your C1 vertebra. That’s a situation where a bony arch exists on the vertebra. For some people it’s inconsequential but for others it can cause pain & other symptoms.
I tried looking at your images in the dicom library link but couldn’t figure out how to see more than the thumbnails that came up. I can tell you that you have a problem that many of our members have & that is loss of the natural cervical lordotic curve. When the cervical spine straightens out, the styloids automatically move closer to nerves & vascular tissues in your neck. A straight neck is called “military neck”. Restoring the lordotic curve is possible, but it takes time & patience. Here’s a link to a post with some helpful information about that:
