Dizziness:Painless head discomfort with many possible causes including disturbances of vision, thebrain,balance(vestibular)系统的内部ear, andgastrointestinalsystem. Dizziness is a medically indistinct term which laypersons use to describe a variety of conditions ranging from lightheadedness,unsteadinessto vertigo.
See: dizziness, unsteadiness, andvertigo.
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Medically reviewed by Martin Zipser, MD; Board Certified: Surgery