- Painless head discomfort with many possible causes including disturbances of vision, the brain, balance (vestibular) system of the inner ear, and gastrointestinal system. Dizziness is a medically indistinct term which laypersons use to describe a variety of conditions ranging from lightheadedness, unsteadiness to vertigo.
* * *Imprecise term commonly used to describe various symptoms such as faintness, giddiness, imbalance, lightheadedness, unsteadiness, or vertigo. SEE ALSO: vertigo. [A. S. dyzig, foolish]
* * *diz·zi·ness 'diz-ē-nəs n the condition of being dizzy esp a sensation of unsteadiness accompanied by a feeling of movement within the head compare VERTIGO (1)
* * *diz·zi·ness (dizґe-nis) a disturbed sense of relationship to space; a sensation of unsteadiness with a feeling of movement within the head. See also dysequilibrium and vertigo.
Medical dictionary. 2011.