Dizziness classification

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Fatimo Biobaku M.B.B.S [2]

Overview

Based on the symptoms, dizziness may be classified into vertigo, presyncope, disequilibrium, lightheadedness.

Classification

Dizziness may be classified into subtypes based on the symptoms:

Classification of Dizziness
Type of Dizziness	Description	Origin of Disorder
Type I Dizziness (Vertigo)	Rotational/spinning sensation Often instantaneous Oscillopsia may occur Often accompanied by nausea, vomiting, and a staggering gait	Vestibular system disorder (Peripheral OR Central)
Type II Dizziness (Impending faint/Presyncope)	Sensation of impending faint/loss of consciousness Pallor, dimness of vision, roaring in the ears, and diaphoresis may occur Recovery upon assuming the recumbent position is common	Non Vestibular system disorder
Type III Dizziness (Disequilibrium)	Loss of balance without an abnormal sensation in the head occurs Occurs when walking and disappears upon sitting down. Occurs as a result of a disorder of motor system control
Type IV Dizziness	Vague lightheadedness occurs It includes dizziness that cannot be identified with certainty as any of the other types