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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.
Causes of Dizziness. 1  Main Cause. Usually due to reduced blood flow to the brain for a short time. 2  Standing too long in one place. Reason: This causes pooling of blood in the legs. 3  Standing up suddenly. Reason: This causes sudden drop in blood pressure.  Dehydration. This can be from losing fluids and/or from not drinking enough fluid.