[Current state of the problem of vertigo]

On the basis of literature and personal data the author qualifies vertigo as an important subjective symptom of a number of diseases. The author proposes and evaluates the existing classifications of vertigo and the applied terminology. The systematics of vertigo based on the clinical experience is proposed. The paper contains qualitative and quantitative characteristics of separate types of vertigo which were singled out according to the character of sensations, conditions of their appearance, time of their duration, attendant neurological and another objective symptomatics and categories of diseases. In this connection the author divides vertigo into peripheral (labyrinthiform and radicle) and central (nucleus, supra-nuclear, "higher"). Principals of treatment are described.