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Dizziness has many possible causes, including inner ear disturbance, motion sickness and medication effects. Sometimes it's caused by an underlying health condition, such as poor circulation, infection or injury. The way dizziness makes you feel and your triggers provide clues for possible causes.
Causes of dizziness. 1  Inner ear problems-Dizziness is caused by problems in the inner ear in about half of all cases of persistent dizziness. 2  Inner ear disorders that cause people to be dizzy include Meniere's disease, benign paroxysmal positional vertigo (BPPV), vestibular neuritis, labyrinthitis and acoustic neuroma.