Factors that alter the properties of inner ear fluid may help cause Meniere's disease.

CNN: Meniere's disease

It appears to be the result of the abnormal volume or composition of fluid in the inner ear.

CNN: Meniere's disease

The sudden shift of fluid in their inner ear makes them feel like they turned their head a lot faster.

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She didn't read the directions the first time she used it, and blew her nose too hard, sending fluid back into her ear canal.

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In order for all of the sensors in the inner ear to function properly, the fluid needs to retain a certain volume, pressure and chemical composition.

CNN: Meniere's disease