Migraine is an intense, throbbing or pulsating headache often accompanied by nausea, vomiting and extreme sensitivity to light and noise. Migraine attacks can cause intense pain for hours or even days, and they can be so severe that the patient may look for a dark and quiet place to lie down and find relief. Some migraines are preceded or accompanied by sensory premonitory symptoms, known as auras, characterized by the perception of light flashes, blind spots in the visual field, or tingling of the arm or leg.

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