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Summary. 1  Generally, most dizziness is caused by problems of the inner ear and is treatable. 2  Common causes of inner ear dizziness include benign paroxysmal positional vertigo (BPPV), migraine and inflammation of the inner ear balance apparatus called vestibular neuritis.
There are, however, other common causes of dizziness. One of these is an inflammation of the inner ear called labrynthitis, which is usually caused by common viral infections. Certain prescription medications can also cause dizziness, as can dehydration and alcohol consumption.