Hi Eileen, I know that the Pres. of HLAA, Richard Einhorn experienced sudden hearing loss a few years ago. I'll bet if you go to HLAA's website you will find something about sudden hearing loss. I'm not sure I'm correct, but I think that it may be that the kind of treatment you are getting is best done immediately after the hearing loss. Was that what happened with you? Do the doctors say anything about your treatment not working? Why?