NCIt definition : A feeling of movement, a sensation as if the external world were revolving around
the patient (objective vertigo) or as if he himself were revolving in space (subjective
vertigo). Vertigo is medically distinct from dizziness, lightheadedness, and unsteadiness.;
Alternative definition : NICHD: A type of dizziness with a sensation of spinning.; CTCAE: A disorder characterized by a sensation as if the external world were revolving
around the patient (objective vertigo) or as if he himself were revolving in space
(subjective vertigo).; FDA: A feeling of movement, a sensation as if the external world were revolving around
the person or as if they were revolving in space (subjective vertigo). Vertigo is
medically distinct from dizziness, lightheadedness, and unsteadiness.;