Hearing in patients with Meniere's disease improved when they were tre
ated in an underpressure chamber. In this study 46 patients with neoro
tological diseases, including 32 cases of Meniere's disease, were test
ed in an overpressure chamber. As a result, hearing in 32% of the pati
ents with Meniere's disease improved, although this was lower than the
50% rate of improvement in Meniere's disease patients tested in an un
derpressure chamber.