"The Link Between Migraines and Visual Patterns: New Study Uncovers Potential Biomarkers"

Migraine aura, experienced by 15% to one-third of migraineurs, presents as psychedelic visual disturbances such as zigzag lines, circles, flickering lights, and blind spots, and is believed to be caused by cortical spreading depression (CSD) altering blood flow and activating sensory pathways in the brain. While not dangerous on its own, it can be mistaken for more serious conditions like a mini-stroke, and is associated with an increased risk of stroke, especially in those taking certain hormonal birth control. However, it can provide a warning window to take steps to prevent or lessen the severity of an impending migraine.