I also have vestibular migraine and understand. There is BPPV, labyrinthitis, vestibular neuritis, Meniere's and vestibular migraine. Phew a lot to sort out.

I have experienced dizziness w/out nausea, vertigo with continuous vomiting, and a feeling of total lack of balance (and being pulled to the left, strangely)...all very different. With different treatments. I suspect the "vestibular migraine" is a catch all. I have "central vertigo" and "vestibular migraine" on my record which indicate origin in the brain. But I also have some inner ear issues. I stopped worrying about labels!