Common Triggers SHARE RATE★★★★★ Weather was the most common trigger reported in the 2012 Migraine in America Study, followed by stress. Next Sign up for emails from Migraine.com: Thanks! You're all set! Good news - you're already subscribed! Need help? Let us know at contact@Migraine.com. Something's not right... Try again or let us know at contact@Migraine.com.