I don't know what the frequency is, but visual migraines are associated with extreme fatigue. The only migraine I had was following high exertion, shortly afte

I don't know what the frequency is, but visual migraines are associated with extreme fatigue. The only migraine I had was following high exertion, shortly after a long flight. It only lasted a couple minutes for me, and I can't say I remember the visual pattern well.