Kazumitsu Ishikawa

Recurrent Vertigo after Sudden Deafness

メニエール病の周辺疾患として急性聴覚障害後の反復性めまい発作例を検討した.1) メニエール病およびその疑い例を除くと, 急性聴覚障害後もめまい発作を反復する症例は少数であった (69例中5例).2) これらの5症例のうち, 3例は高度の内耳障害の所見を示したが 他の2例は中枢障害の加味された所見を呈し, 急性聴覚障害の後にめまいを反復する症例の成因が一元的ではないことを示した.3) 急性聴覚障害の後にめまい発作を反復する症例に遭遇した場合種々の疾患の可能性を考慮し相当長期の経過観察により慎重に対処すべきものと思われた.

Epidemiological and Clinical Survey on Definite Cases of Bilateral Meniere's Disease as Reported by Seventeen Members of Meniere's Disease Research Committee of Japan During 1975-1976

Between April 1975, and December 1976, the second national epidemiological and clinical investigations of Menieres disease in Japan were carried out by the Menieres Disease Research Committee, as supported by the Ministry of Health and Welfare. Among 520 patients with definite Menieres disease, 48 (9.4%) were considered to be bilateral Menieres disease by all the 17 members of this Research Committee, respectively.Epidemiological and clinical features in 48 patients with bilateral Menieres disease were collected and statistically analyzed in comparison with 465 cases of unilateral Menieres disease, in whom affected ears were determined by each reseacher.Characteristic epidemiological and clinical features were as follows:1) Sex-ratio: The male to female ratio in bilateral Menieres disease was 66:100, respectively.2) Age distribution: Peaks were noted at the age group of 40-49 for both males and females.3) Family history: 4 cases (8.3 percent) of the 48 patients with bilateral involvement had a close relative who had Menieres disease.4) Preceding events: Mental and physical fatigue before vertiginous attack were reported in 35 and 42 percent of bilateral Menieres disease series, respectively.5) Season and time of onset: There was a high frequency of vertiginous attack in spring in the bilateral Menieres disease, and high frequency of such attacks peaked in the afternoon (13:00-14:00).6) Marriage: The incidence of bilateral Menieres disease was higher in married persons.7) Past history and complication: There was a higher incidence of hypotension and diabetes mellitus in past history in cases of bilateral involvement.8) Hearing impairment in bilateral cases was higher than in unilateral cases.9) The incidence of bilateral Menieres disease increased with increasing duration of the disease. Such was also found by Enander and Stahle (1967) and Kitahara (1975).10) The most common vertiginous attack in those with bilateral involvement showed the characteristic feature of a more extensive rotatory spontaneous vertigo than was seen in cases of unilateral involvement.