Is there a cure for vertiginous migraine?

Meds can help. If the diagnosis is correct , the treatment for the so called basilar migraine is no different from other forms, prevention by recognizing trigger factors or by medications , changes in life style or treatment of acute attacks are available.
Bite could be the pm. If your lower jaw is retruded or jammed in your joint it can possibly push into the middle ear causing imbalance issues try to look up neuromuscular dentist in your area specifically and the shd be able to help.