Headache and migraine pain relief is the goal of BEYOND Headaches

Migraine Aura


A migraine aura is typical of about 15 to 20% all the migraine headache sufferers in the world. Many migraine sufferers have a warning that the headache is coming on, known as a migraines with aura.

Yes, there are many different types of migraines, some with this aura and some people will experience a migraine aura without headache.

Migraines With Aura

Self-help tips for Aura Migraine headache sufferers - causes & triggers. 
The aura is a change in brain function with subtle to alarming signs. It is usually a visual symptom, such as an arc of sparkling (scintillating) zig-zag lines or a blind spot in ones field of vision or both.

But any other brain-related symptom may occur, such as numbness of one side of the face and hand, weakness, unsteadiness, or altered consciousness.

In past years migraines with aura were thought to be caused by spasm of blood vessels supplying parts of the brain, and the headache was thought to be due to subsequent expansion (dilation) of blood vessels in the head. Truth be told, it is not that simple.

Migraine Headache Causes

 
The cause of the pain, of migraine headache has been discussed at great length. Briefly, Headache pain follows certain changes that take place in the nerves to the major blood vessels in the head.

The aura is due to changes that take place in the cortex, the outer layer of the brain.

Causes of Headaches and Triggers


Neurons (nerve cells) of the brain are always active. This can be demonstrated by the electrical activity they generate on the electroencephalogram (EEG). Migraine aura, migraines with aura, different types of aura migraines. Migraine aura, migraines with aura, different types of aura migraines. Migraine aura, migraines with aura, different types of aura migraines. Migraine aura, migraines with aura, different types of aura migraines.

In experiments with animals, the EEG shows a depression (lowering) of nerve cell activity below a spot on the cortex of the brain that has been stimulated.

Surrounding the area of depressed activity is a zone in which nerve cells have become hyperactive. Some have hypothesized that a similar pattern of decreased and increased nerve cell activity occurs in the brain of a person with migraine, following the stimulus of a migraine “trigger.”  But that is theory.

Symptoms of a Migraine Aura

 
When the activity of nerve cells is depressed, there is impairment of function in the part of the body controlled by these cells.

For example, in migraines with aura there may be a loss of vision or of strength. Increased activity of brain nerve cells may result in a sensation such as tingling in the face and or hand.

Lack of Blood Flow?

 
The migraine aura visual component is possibly linked to the basilar artery (at the base of the skull) and for some reason a reduction of blood flow. Reduced blood flow in kind, produces a reduction of oxygen provided the visual cortex.

This is considered an ischemic event. Ischemia means lack of normal blood flow. You might be familiar with coronary heart disease. If the coronary artery becomes slowly blocked by atherosclerotic plaque the heart muscle gets weaker until an area of the myocardium shuts down.

That is an extreme example of the effects of ischemia. However, it is equally imperative that your brain not experience ischemia.  

Some consider the aura and other aspects of headache conditions to be linked with this type of internal mechanism.



Learn the 3 most useful Self-Help Tips when dealing with AURA MIGRAINES
from Dr. Finnigan, the author of Life Beyond Headaches.

Aura Migraines