Vertigo and dizziness of functional origin

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Abstract
In patients consulting otologists for vertigo a functional source can be expected in 50% of the patients and more frequently among young females than among older male subjects. Functional vertigo is frequently perceived as a turning sensation inside the head, functional dizziness frequently as a rocking sensation of the whole body, while patients with vertigo of somatic origin frequently seem to complain of a spinning sensation outside the head.The duration pattern of functional vertigo is frequently of a fluctuating or continuous type, while in the nonfunctional subjects it is of 2‐5 hr. duration. In patients with vertigo of functional origin eye‐closure tends to release rather than inhibit nystagmus.