One of the more distressing symptoms of a classic migraine is the need for a migraine sufferer to shun the light and lie down in a darkened room. Nearly 85% of migraine sufferers are sensitive to light and scientists now believe that they have solved the mystery.
Their research has shown that light exacerbates migraines because of a group of retina cells at the back of the eye. These photoreceptors send a signal to the brain along the optic nerve which stimulates the migraine pain neurons. This means that any amount of light causes pain and ensures that the migraine sufferer seeks out a dark room.
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