I have done a lot of research been to Dr Er so many times I asked them about this I do t get a straight answer. The only type of answer I got was from a therapist she told me to massage my Vegas nerve .. I have vertigo too try a ear nose throat Doc . Sorry that wasn't much help I wish I had the answer ..

This might sound a little weird but try putting an ice pack or a bag of ice wrapped in a towel on your chest. It almost shocks your system into fixing itself for lack of better words, it helps me during some panic attacks 💗