4. Discussion
IT therapy was first reported by Fradis in 1985, then two reports used
IT dexamethasone or lidocaine in Ménière disease, and a lot of patients
got an improvement in vertigo and tinnitus[4,6].
neither of the two reports mentioned the complications of IT, and both
of them thought the IT was safe and effective. However, more and more
research found that this technique may cause some adverse side effect in
recent years.