Multiple sclerosis in the otoneurology outpatient clinic: interdisciplinary cooperation between otoneurologist and neurologist

Summary Introduction: Multiple sclerosis (MS) is a chronic multifocal inflammatory disease affecting the CNS, with autoimmune and neurodegenerative processes involved in its pathogenesis. Otoneurology outpatient clinic patients presenting with hearing loss, tinnitus, and vertigo may eventually be newly dia­gnosed MS patients. An otoneurologist specialist may be the first physician to suspect MS and refer the patient for an MRI and neurological examination. Early dia­gnosis and subsequent treatment of MS can delay permanent disability. Aim: Analysis of the incidence of MS patients in an otoneurological outpatient clinic during a twenty-year period. To increase the otoneurologists’ awareness of MS dia­gnosis. Methods and materials: Of 6,000 patients, who were newly examined in an otoneurology outpatient clinic between 2000 and 2021, data of 11 patients (0,18%) (5 male/6 female, aged 25–58 years) with MS or suspected of MS were retrospectively evaluated. Results: In 11 patients, MS was suspected or ongoing. In 4 of those patients, otoneurological examination contributed to the first detection of MS by an otoneurologist. The first MS symptoms included hearing loss, tinnitus, instability, and post-infection visual disorder. Conclusion: The otoneurologist must consider that sudden hearing loss, tinnitus, and vertigo may be the first manifestations of MS. Early dia­gnosis of MS increases the likelihood that with treatment, the progression of the disease will be slowed. Interdisciplinary cooperation between the otoneurologists and neurologists is very important for the dia­gnosis of MS. Key words multiple sclerosis – sensorineural hearing loss – tinnitus – vertigo – otoneurology