I don't see how fcr and HBOT would have any coorelation. HBOT is being researched for concussions and the jury is still out. Anecdotal evidence varies. It is not a cure. It can reduce some symptoms for some people. It takes 40 to 80 sessions to see results for those who see results. The lowest price I've seen is $80 per dive/session when a large package of dives is purchased. It is not uncommon for dives to cost $150 to $200 each.

fcr is very controversial. The idea that cranial plates and bones can be modified is not based on repeatable evidence.

There is no cure for brain injuries. Just some treatments that reduce symptom intensity. The promising treatments need clinical double blind research before getting approved. Those with promise require continuing use at thousands of dollars per year and more.