Vertigo n. : Dizziness or swimming of the head; an affection of the head in which objects, though stationary, appear to move in various directions, and the person affected finds it difficult to maintain an erect posture; giddiness.

Vertigo n. : Any one of numerous species of small land snails belonging to the genus Vertigo, having an elongated or conical spiral shell and usually teeth in the aperture.

Example:
Is suffering from Vertigo a serious affliction for a President of the United States?

Taxonomy
vertigo, symptom, inner ear, benign paroxysmal positional vertigo, causes of vertigo, centrally, peripheral, neurochemistry, Definition of vertigo, sensation, free encyclopedia, neurotransmitters, emesis, dizziness, balance, neurons, excitatory neurotransmitters, withdrawal symptoms.

Defination from the web:
Vertigo is usually associated with a problem in the inner ear balance mechanisms (vestibular system), in the syndrome and Meniere's disease. ... Vertigo is a frequently found symptom, along with brain shivers, insomnia, nausea, confusion, imbalance, sweating, and many more as withdrawal ...