My problem was that My ears wouldn't hold the pressure. The ears need to hold a 20 and mine coudn't even hold a 2 or 3. I had to get tubes ut in my ears and then the problem was an insy=tant headache, that was unbearable. We tried it at different times and then I was told I couldn't do the HBO. The Dr that wants to remove my jaw suggested HBO now . After he talked to UPMC's HBO team, he forgot HBO treatments. I sure wish Michael the best during this. My ENT removed the right tube a few months ago but the left one is too bloody to be removed as of now. I'm stuck with the headaches instead of being one for someone else. LOL