A brief summary of current research.
Cifu, DX, Hart, BB, West, SL, Walker, W, & Carne, W (2014). Journal of Head Trauma Rehabilitation, 29 (1), pp 11-20.
The second phase of this collaborative study between the Department of Defense and the Department of Veterans Affairs looked at the use of hyperbaric oxygen (HBO2) on 60 military service members and its effect on persistent post-concussion symptoms. Researchers concluded that there were no significant effects from using HBO2 to manage symptoms.