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The aura phase of migraine can occur with or without a headache. Ocular or retinal migraines happen in the eye, so only affect the vision in that eye, while visual migraines occur in the brain, so affect the vision in both eyes together. Visual migraines result from cortical spreading depression and are also commonly termed scintillating scotoma.
Retinal migraines also affect your vision before or during a migraine headache, but they only cause symptoms in one of your eyes. Retinal migraine symptoms tend to be more severe than regular aura ...
Ocular migraines affect your vision in one or both eyes. Here, experts share ocular migraine symptoms, causes, and treatments.
Photopsia; This is an approximation of the zig-zag visual of a scintillating scotoma as a migraine aura. It moves and vibrates, expanding and slowly fading away over the course of about 20 minutes.
Scintillating scotomas are most commonly caused by cortical spreading depression, a pattern of changes in the behavior of nerves in the brain during a migraine. Migraines, in turn, may be caused by genetic influences and hormones. People with migraines often self-report triggers for migraines involving stress or foods, [9] or bright lights. [10]
A migraine headache can throw your whole day off track. But if you can learn to pick up on your subtle migraine warning signs, you might able to avoid the pain entirely , experts say.
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