Knowing your headache triggers may help you ward off migraine-related vertigo. Things like chocolate, cheese, alcohol, and foods with the preservative MSG are triggers for some people. If you have vestibular migraines, these things might trigger your symptoms, too. It can't hurt to cut them from your diet to see if your symptoms ease up a bit.
Tracking your diet is another good way to help tell if your vertigo symptoms are really due to headaches. For example, a high-salt diet can make vertigo symptoms worse if you have Meniere's disease. Keep a food diary and show it to your doctor. It can help improve your diagnosis and treatment.