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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).
Lightheadedness-Feeling lightheaded now and again is pretty common. Usually it is not caused by a serious problem. What causes dizzy spells in the case of lightheadedness is often a drop in blood pressure and blood flow to the head from standing up too quickly after lying down or sitting. This is called orthostatic hypotension. There are many other causes of dizzy spells of this type, such as: