There are some specific, unusual subtypes of migraine that do carry an increased risk of stroke. Many researchers feel that migraine stroke has been grossly overestimated. People with migraine get older, have risk factors for stroke or a family history of stroke. Some of them will have strokes when older, but not necessarily because of the migraines. So new diagnostic criteria are being developed so that we can be more specific about this and determine which strokes really are due to migraine so that we can quote accurate statistics as to the risk of migrainous stroke.
Magnesium can also be helpful for some migraine patients.
I often use riboflavin in pregnant women who cannot take medications. Peppermint and lavender oils used to massage the skin can also help. Other aromatherapy oils are being studied. We do not know why. I have a friend who gets aura without headache only while pregnant.