I have these types of migraines. The effect can last more than just during the migraine because it overwhelms your balance center. It is sort of like a migraine hang over. They can happen often enough that your body cannot fully return to normal befire the next one occurs. You may have other issues that compound with the migraines. I have Chronic Subjective Dizziness coupled with my Vestibluar migraines and it makes me "dizzy" for hours…days…weeks…months…and even years at a time. I went to Mayo Clinic and had it diagnosed. I use a combination of medication, suppliments, exercise, talk therapy, and some less convential methids to strengthen my tolerance to the dizzy. I also work to prevent triggers from causing more acute attacks. It is a life long challenge for me going on 8yrs now. Be open minded. Our brains are very powerful and very delicate. Keep Looking for answers but be willing to really hear what doctors find in medical evidence. Not all cases of any one medical issue have the exact same symptoms. Take Care Hang In There!