| labyrinthine apoplexy | A clinical syndrome manifested as a single, abrupt attack of severe vertigo, nausea, and vomiting, with permanent loss of labyrinthine function on one side, but without associated hearing loss or tinnitus. Attributed to occlusion of the labyrinthine branch of the internal auditory artery. (05 Mar 2000) |
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| functional apoplexy | A condition simulating apoplexy without any cerebral lesion; a form of conversion hysteria. (05 Mar 2000) |