Migraine

Migraines are a form of a vascular headache, which means it is related to functionality of blood vessels. Migraine headaches are caused by a combination of vasodilatation (enlargement of blood vessels) and the release of chemicals from nerve fibers that coil around the blood vessels. It is the enlargement of these blood vessels which cause the severe headaches and dizziness. In the course of a migraine, the temporal artery enlarges. This is the artery that lies on the outside of the skull bone right under the temple of the fore head. This enlargement causes a certain scratching or an itch in the surrounding nerves and causes them to release come chemicals, which in turn cause inflammation and pain.

This inflammation often happens periodically to those who suffer from migraine headaches. It can happen on one or both or either sides of your head. Migraine headaches are often accompanied with mild or aggressive dizziness which causes nausea and urge to throw up. The reason or causes of migraine headaches can be anything to everything and they vary in a large number. The most common causes of migraine headaches occurring in people are increased sensitivity of the eyes to light (photophobia) with visual disturbance and flashes (aura), increased sensitivity to sound (phonophobia), dizziness, blurred vision, cognitive disturbances, and other increased periods of exposure to anything that might desensitivise the cranial nerves.   

Source:-http://www.articlesbase.com/hearing-articles/migraine-in-vertigo-and-ear-clinic-in-jaipur-6596616.html

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