Aura is a slow neural wave, not vessel spasm. What that means, and the features that separate it from a TIA.
You see the zigzag lines. The blind spot creeps across your vision. Your hand goes tingly, or words won't come out right for a few minutes. And then... nothing. No head pain follows. If this sounds familiar, you've experienced what's commonly called a "silent migraine" — and clinically, it's a real, recognized migraine subtype, not…