Previous mra showed tiny right vertebral artery. i get awful migraine and pain over this area too. as well as worsening vertigo.vad? impendingstroke?

Presumably you have: been having symptoms associated with vertebral artery circulation leading to an MR angiogram. The criteria for a hypoplastic/underdeveloped vertebral artery is one that is 2 mm or less in size. It is believed that this congenital anatomic variation is not uncommon. There are more studies showing that a small artery is related to ischemia, fewer showing risk for actual stroke. Work with Neurologist