Mary,   Migraine is a genetic neurological disease caused by genetic propensity and overactive neurons in the brain. Although Migraine attacks can begin and occur at any age, when they first begin after the age of 50, special care needs to be taken to rule out other possible causes for the symptoms such as stroke or TIA.   You didn't mention what, if any, imaging studies were conducted? They can be key to ruling out other issues. Unfortunately, there is no diagnostic test to confirm Migraine. It's diagnosed by reviewing your medical history and symptoms, conducting a full exam, and ruling out other conditions.   That said, all of the symptoms you describe could well be from a Migraine attack, and a Migraine can occur without the headache phase. You can read more about this in Acephalgic or Silent Migraine - The Basics.   Hope this helps!Teri