Vertigo is a symptom, not a diagnosis. Vertigo is defined as the hallucination of motion. The motion can be objective -- the patient perceives the motion of the environment -- or subjective -- the patient perceives an internal sense of motion or spinning. Objective vertigo is nearly always related to a problem of the inner ear or the ear's complex connections to the central nervous system. Subjective vertigo can be ear-related as well, but can also have numerous other systemic causes.
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