Migraine fortification illusions are the visual figures or displays that occur in the brain before experiencing headaches. The illusions appear in a temporary hexagonal form and tend to start with tiny sparks that slowly scatter, forming a zig-zag pattern. Migraine illusions can indicate how the brain nerve cells are arranged and impacts vision in the affected area. Most migraine fortification illusions symptoms last for less than 30 minutes, followed by an intense headache that can last for some 4-6 hours. People can sometimes experience migraine fortification illusions without headaches but with other visual or illusion symptoms. This condition can be triggered by genetics, fatigue, eating some foods, damage to blood vessels linked to the brain, or growth of cortical depression. Women experience migraine fortification illusions more than men.
