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Common causes of dizziness include a migraine, medications, and alcohol. It can also be caused by a problem in the inner ear, where balance is regulated. Dizziness is often a result of vertigo as well. The most common cause of vertigo and vertigo-related dizziness is benign positional vertigo (BPV).
Vertigo is a big culprit in the causes of dizziness and lightheadedness, which can be a result of inflammation of the inner ear or a symptom of a disease that involves excessive fluid buildup in the inner ear. Many prescription medications have dizziness and lightheadedness as a side effect. While there are many possibilities, the more common causes of dizziness and lightheadedness are sudden dramatic drops in blood pressure, low iron levels, low blood sugar and dehydration.