[Internuclear ophthalmoplegia in infectious encephalitis: observation on a case of listeriosis].

An internuclear ophthalmoplegia was diagnosed and recorded electro-oculographically in a patient with pontomedullary listeriosis. The etiological differential diagnosis in case of internuclear ophthalmoplegia is discussed. It is emphasized that listeria monocytogenes encephalitis should be considered because this pathology may be electively located in the pontomedullary area and because of the encreasing frequency of human listeriosis.