As a 25 year patient with migraines my symptoms and warnings have remained pretty much the same. But here in the past year or so I have developed a new warning. When I am about to get a migraine I start yawning. And just once or twice but constantly. Uncontrollably, for a good five or so minutes. Then about a half hour later I have a viscous migraine. My abortive medicine lessens the impact but I am working with my neurologist to update my meds.