I also have migraine with aura. There are visual effects but also when I am looking into the mirror I can't see half of my face and give this is a wrong perception of reality you might consider it a hallucination?
Same, the fortification aura is really kind of amazing, putting aside the debilitating pain that's quickly approaching. It's really weird to have a part of your vision just "not there" as opposed to being black. It's even stranger when looking at a face or some recognizable object, and half of it disappears into nothingness while the other half still exists. Fun to play with.
the first time i had this, everyone's nose was missing. for ten seconds it was funny and then i hid in a bathroom stall at work, and texted my wife goodbye. i was positive i was about to die. its really stressful to have bodies.