The population of six towns located on Tsushima, a remote, isolated island about 51000. The ENT-examination and clinical consultation for patients with vertigo and/or dizziness were made from March 1984 to December 1985 in National Tsushima Hospital. Within about 1600 outpatients,72 patients with vertiginous attacks were examined and 7 were diagnosed as having Meniere's disease and 24 paroxysmal positional vertigo, benign paroxysmal type of 6, head injury of 6 and unknown causes of 12.
Seventy five years old man suffering from tumor of cerebropontine angle were found and 2 women suffering from bilateral vestibular hypofunction were treated in the Hospital. Four patients with unilateral vestibular hypofunction were considered to old vestibular neuronitis.
