Hennebert sign

Henne·bert sign

(en'ĕ-bār), nystagmus produced by pressure applied to a sealed external auditory canal; may be seen in labyrinthine fistula or with intact tympanic membrane in syphilitic involvement of the otic capsule.

Hen·ne·bert sign

(en'ĕ-bār sīn) Nystagmus produced by pressure applied to a sealed external auditory canal; may be seen in labyrinthine fistula or with intact tympanic membrane in syphilitic involvement of the otic capsule.
See also: Tullio phenomenon