Hi all, sorry for bothering you again! My first Hyperbaric Oxygen Therapy session has scared of me. I was feeling very positive about the treatment, but as you might have read in my other post, my T has been incredibly high since. I have new sounds now too. The things is, my ear drums were slightly retracted and I had a Typanometry (pressure test) done by my ENT specialist and it showed that my right ear drum does not equalise properly. Basically mine looked like Image B on this link: http://en.wikipedia.org/wiki/Tympanometry. According to the website, this could mean anything from fluid in the middle ear, perforation of the tympanic membrane, scarring of the tympanic membrane, or lack of contact between the conduction bones of the middle ear. The Hyperbaric Oxygen specialist said I would be fine as long as I didn't feel any pain during the session, which I didn't. Now, I am terribly afraid that I might have messed something up big time with this oxygen session, especially if there's a problem in my middle ear. A CT scan didn't reveal anything, but then again, how much can they really see on those? Why is the ringing so much worse after the session? I know that this might be a tricky one to answer, but is there anyone who might know what's going on, or who has also had an Typanometry done? Or who experiences similar problems with their ear drums popping etc.? Or (temporary) worsening of T after the Oxygen Therapy or scuba diving? I'm so, so scared. Thanks guys, once again.