All,
Sorry for the long post, but this might have pertinent information to the original poster. I am not a doctor, nor did I stay at a Holiday Inn Express last night.
My wife has tinnitus and what was diagnosed as vertigo for approximately 15 years. A couple of years ago, the vertigo had gotten so bad that she was basically unable to function 4 or 5 days a week. She had a self-imposed ban on driving because she was never sure when another episode would hit.
She had gone through the general practitioner, then an otolaryngologist at the local hospital. The otolaryngologist had exhausted all possibilities and suggested a surgery to deaden the nerves in the ears. This was his last known solution. Because the surgery would result in hearing loss, he was hesitant to perform the surgery without a final referral to a specialist at Johns Hopkins Hospital (fortunately, we only live about an hour or so away).
I went with my wife for her appointment, as she was still not comfortable with driving. He viewed her history, CAT scans, etc. He examined her ears. Then he interviewed her. Within about 15 minutes, his conclusion was that the "vertigo" was actually a symptom of a migraine. He gave her a list of foods that are known migraine triggers. Then, and I know this sounds like a sales pitch, he said "Go buy my book". Yeah, right.
So we left and bought the book (Heal Your Headache - David Buchholz, M.D.). It's available from amazon (we found it at the local bookstore). It's not like it was a high dollar, available only from Johns Hopkins type of deal.
Long story longer, the book outlines a course of action. You immediately eliminate all trigger foods, yes, including alcohol. Other items are cured meats (nitrates), aged cheeses (Velveeta is OK!), and things that are supposed to be good for you such as spinach and beef liver. Then you slowly start adding foods back into the diet, one at a time, until you discover your particular triggers.
My wife is much better. Most foods have been added back into the diet. It is a commitment at first. The diet ends up being limited and at times a little bland.
Now, to answer the original question, alcohol may or may not be your trigger. Your vertigo may or may not be a symptom of a migraine. Only your doctor can know for sure. Then again, maybe he won't. YMMV