“…Epidemiologically, it is estimated to occur in at least 24 per 100,000 persons a year with the typical age of onset between 30 and 60 years 4,5 . For example, in the catchment area of Landshut (Lower Bavaria) with about 200,000 inhabitants, 42 patients a year (2015) are diagnosed and treated 6 . As potential causes viral infections, vascular occlusion and immunomediated mechanisms are discussed whereby mainly the superior vestibular nerve is affected 5 .…”