Sudden-onset bilateral deafness revealing early neurosyphilis

Abstract

Introduction: Rapid-onset of sensorineural hearing loss in a patient at risk of genital or oral exposure to treponema can be secondary to early neurosyphilis, for which delayed treatment may result in irreversible sequelae.

Summary of the case report: A 40-year-old, HIV seropositive man with a CD4 lymphocyte count greater than 500/mm(3) presented with rapid-onset of bilateral sensorineural hearing loss over a period of one week. Otorhinolaryngological examination was normal. The audiogram showed bilateral hearing loss of 25 and 30 decibels, respectively. He subsequently developed loss of visual acuity, leading to the diagnosis of syphilitic meningitis affecting the optic and auditory nerves.

Discussion: In about one half of cases, neurosyphilis is an early manifestation of the disease occurring several weeks or months after contamination. Rapid- or even sudden-onset of hearing loss may be due to auditory neuritis. Clinical interview and syphilis serology in a patient at risk of exposure can allow rapid diagnosis and treatment, consisting of two weeks parenteral penicillin. Recovery of hearing loss is inconstant but can be complete.