VNG is a test that measures a type of involuntary eye movement called nystagmus.
Nystagmus causes your eyes to move from side to side or up and down, or both.
Basically It happens when the brain gets conflicting messages.... from your eyes and the balance system in the inner ear.
These conflicting messages can cause dizziness
Now the thing is ...You can briefly get nystagmus when you move your head in a certain way or look at some types of patterns.
But if you get nystagmus when you don't move your head or .....if it lasts a long time, ...it may mean you have a disorder of the vestibular system.
What is it used for?
VNG is used to find out if you have a disorder of the vestibular system that is the balance structures in your inner ear
Why u need a VNG?
You may need a VNG if you have symptoms of a vestibular disorder.
The main symptom is dizziness
Other symptoms include:
Nystagmus
Ringing in the ears
Feeling of fullness or pressure in the ear
Confusion
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