Mark, thank you for taking your time to reply and I hope your wife is doing better. I never thought much of the first and only vertigo attack so far (hopefully non more) but you are right about it being a mini-stroke or "transient ischemic attack". The description is right on makes the most sense "A TIA is like a stroke in that it produces similar symptoms, but it only lasts a few minutes and causes no permanent damage." It's strange that 2 neurologists I've seen did not mention TIA as the reason why I felt vertigo during the first attack. However, one of my neurologists was onto something when he prescribed Nimodipone. After reading your response I believe he was on the right course to treat my symptoms. I guess at this stage any bleeding would have healed by now as well so further tests might not reveal anything new. I will do some further research on taking anti-platelet drugs and possibly an angiogram as a last resort.