What is vertigo?
Vertigo is a false sense of movement, either of oneself or of the environment. The feeling may involve the whole body or be limited to the head.
Vertigo should be distinguished from dizziness or giddiness resulting from near syncope, postural hypotension, hyperventilation, multiple sensory deficits, ataxia, or other etiologies.
The spinning or swirling sensations of vertigo are related to disturbances of the vestibular system.