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The usual description of migraine includes visual

See how Mayo Clinic research and clinical trials advance the science of medicine and improve patient care. .Even if you have a history of headaches, see your doctor if the pattern changes or your headaches suddenly feel different.

Auras are symptoms of the nervous system. They are usually visual disturbances, such as flashes of light or wavy, zigzag vision. Taking over-the-counter or prescription headache medications more than days a month for three months or in high doses may trigger serious medication-overuse headaches.

[Guideline] Matchar DB, Young WB, Rosenberg JA, et al. Evidence-based guidelines for migraine headache in the primary care setting: Pharmacological management of acute attacks. American Academy of Neurology. February 10, 2011. .Nitric oxide levels continue to be increased even in the headache-free period in migraineurs.In premenopausal women with migraine, particularly in those with migraine aura, increased endothelial activation, which is a component of endothelial dysfunction, is evident.

The worldwide prevalence of is unknown. Studies suggest that in Denmark about 1 in 10,000 people have hemiplegic migraine and that the condition occurs equally in families with multiple affected individuals () and in individuals with no family history of the condition ().

Your doctor will ask you about your symptoms and examine your eyes. He&aposll try to rule out other conditions that could cause similar problems, such as:

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