気象(とくに寒冷前線通過)とメニエール病発作との関連性について

概要

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The influence of a cold front (CF) on the onset of Menieres disease was investigated. A major CF is difined by the meteorological observatory as fulfilling the following conditions: 1. falling temperature (>5 deg), 2. rising humidity, 3. strong wind more than 10 m/sec, 4. rain or snow, 5. thunder, 6. wind shifting from south to north-west. This occured 14 times in 1992. The passing of a minor CF is decided from weather maps. Major and minor CFs occured oneclench for five days in winter and for 10 days in summer.<BR>The influence of CFs on Menieres disease was evaluated by the time n method and the results were compared with those of patients with sudden deafness and with Bells palsy.<BR>The onset of Menieres disease had its highest incidence just after CF passed. The histogram of the number of days between the passing of a CF and the onset of Menieres disease indicated a normal distribution. On the other hand, in patients with Bells palsy the onset was most frequent one day before the passing of a CF, and in those with sudden deafness no specific concentration was observed.<BR>From these results we concluded that the onset of Menieres disease was influenced by the passing of a CF and that this influence was more specific in Menieres disease than in Bells palsy or sudden deafness.