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The increasing prevalence of migraine is easily a result of increased known triggers, such as bright light, loud noise, altered sleep/wake patterns, and emotional stress. This is an example of mismatch theory , which states that the current environment differs from the evolutionary environment of a particular trait.
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]
Rapid flickers in intensity of light may trigger or aggravate photosensitive epilepsy, epileptic seizure, or migraine headaches. [4] Conditions that may include sensitivity to light include vertigo and chronic fatigue syndrome. Controlled application of artificial light can be used in a program of light therapy to treat some disorders.
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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. "This is a ...
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Migraine does not appear to increase the risk of death from stroke or heart disease. [143] Preventative therapy of migraine in those with migraine with aura may prevent associated strokes. [144] People with migraine, particularly women, may develop higher than average numbers of white matter brain lesions of unclear significance. [145]
Episodes of vasovagal syncope are typically recurrent and usually occur when the predisposed person is exposed to a specific trigger. Before losing consciousness, the individual frequently experiences early signs or symptoms such as lightheadedness, nausea, the feeling of being extremely hot or cold (accompanied by sweating), ringing in the ears, an uncomfortable feeling in the heart, fuzzy ...