- A dictionary of medical eponyms

Dandy's phenomenon

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A peculiar form of mock movements seen in loss of labyrinthian sense following toxic streptomycin damage.

Description

Oscillopsia in bilateral vestibular loss. A peculiar form of mock movements seen in loss of labyrinthian sense following toxic streptomycin damage. It also occurs as an associated symptom in Menière's syndrome. When the patient moves his head fast he has the impression that the surroundings are moving, while they seem stable when the head is kept quiet. The phenomenon is characteristic of persons with double-sided vestibular damage. It is due to loss of function of the vestibular reflex. See Dandy's syndrome.

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