Scintillating scotoma
A scintillating scotoma is a swirling pattern of bright colours around the periphery of your vision, that spiral inwards until you become temporarily blind. It's an early part of a migraine, and can serve as a warning sign that one's coming on, although not all migraines have this particular component.
Mirgraines: 2026-06-06 | Dissociation | Scintillating scotoma