The nervous system seem to more effected by the availability of nitric oxide to promote nerve repair than supersaturation with oxygen.
"Multiple sclerosis (MS) is a chronic disease of the nervous system which affects young and middle-aged adults. Repeated damage to parts of the nerves leads to progressive weakness and disability. Hyperbaric oxygen therapy (HBOT) involves people breathing pure oxygen in a specially designed chamber (such as used for deep sea divers suffering pressure problems after resurfacing). HBOT is sometimes used for MS in case a lack of oxygen to the affected nerves may be making MS worse, but this theory is unproven. The review of nine trials found no consistent evidence that HOBT can improve disability or modify the progression of MS. There is little need for further research."
Bennett MH, Heard R. Hyperbaric oxygen therapy for multiple sclerosis. Cochrane Database of Systematic Reviews 2004, Issue 1. Art. No.: CD003057. DOI: 10.1002/14651858.CD003057.pub2
My research was the same as DV's, but I included the link to the PDF.
The US Navy and the Royal Navy have more experience in Hyperbaric Medicine (and operate more chambers) than just about anybody out there. It has proven efficacy for radiation necrosis of soft tissue and bone, mucormycosis, gas gangrene, disassociation of carbon monoxide from hemoglobin, gas embolism and improving the viability of skin grafts. It is not recognized for the reversal of Myelin and/or nerve damage.
There are current therapies for peripheral nerve disease using pulsed infrared light to increase the local nitric oxide level around the nerves to resolve peripheral neuropathy, but those are typically non-myelinated nerves and it might be a bit difficult to get pulsed IR anywhere near the central nervous system.
Thanks Bob. I should add that ny skepticism about this therapy is in regards to treating MS. I have heard about it being used successful for other heath issues, eg: athletes using it to expedite recovery period for sports injuries.
Continue your research. There are actual MS patients that have found it helpful for there sleeping, balance, fatigue, and vertigo. MSers are the ones you want to hear from, not the researchers that say, there is little need for future research.
Had to post this link. Good reading about actual MS patients and Hbot.