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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.
Less common causes of dizziness include: 1  having a severe illness or condition that affects the whole body. 2  using recreational drugs or consuming excessive amounts of alcohol (either binge drinking or long-term alcohol misuse) 3  certain types of prescription medicine â such as antidepressants or blood pressure medication.