There's nothing to say it can't be both (e.g. migraine brought on by neck issue or migraine and headache brought on by neck issue).

I have a tension-type/migraine complex. I can get either or both together, and either can present as the other. The two types respond to different kinds of meds, so determining/guessing which I have—and how to treat—can be problematic.

Have you had your eyes examined lately? Baclofen & gabapentin can affect vision, but there could be something else. I developed a slight astigmatism a few years ago. My vision is still 20-20, but it used to be better, and I need reading glasses.

Doc