Vertical pendular nystagmus and hypertrophic inferior olivary nuclei degeneration: an “odd couple”
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KeywordsLamotrigine Memantine Pregabalin Inferior Olive Diopter Prism
Conflict of interest
The authors declare that they have no conflicts of interests and that they have no grants to disclose for this study. The manuscript has not been published elsewhere and has not been submitted simultaneously for publication to another source. There is no ghost writing by anyone not named on the author list.
Video Legend The patient shows a pure vertical conjugate 2-3 Hz, 2-3° amplitude pendular nystagmus (PN). Up- and down-phases are symmetric for direction and velocity and without null zones. There are no torsional or gaze-evoked components. The video shows that PN is not modified by poursuit and saccadic eye movement, convergence, or active or passive head thrust (tilt and slow rotation) (MPG 54722 kb)