TeeDee:
I've spent a few hours these days looking up hyperbaric chamber treatments - The information is easy to find.
There's one that deals with treatment for Lyme - with a caveat.
90 of the 91 individuals suffered "
severe" Herx which lasted a month or more and then were improved for up to 8 months later.
Those with Babesia, Ehrlichiosis, etc. (uh oh, brain drain settling in

)
were either not improved.....oh shucks....sorry.....too much researching, LOL
It's really easy to look up, though. Only have to go through 4 or 5 pages of different subtopics to find the Lyme one....
I haven't heard of anyone who's gone through this treatment, and there does seem to be considerable difference in the amount of time spent in the chamber (5 to 40 treatments) basically.....I gathered that newly (acute) infected patients did best.....
My printer needs new ink, so I didn't print it out.....I would've still recommended you check it out yourself....GOOD LUCK!