Unrelated, but I used to get them often. I found one article about vitamin D deficiency as a potential cause, and figured, "what what hell". Started taking 5000IU every day of the Swanson's brand. It took a month or so, but I've been aura migraine free for months (still get migraines sometimes, but they're MUCH less severe than they used to be and no auras). Ask your doctor first, in case you can't take vitamin D, but it's worth a try if it's safe for you.