I imagine the pressure in his skull will increase with the cabin pressure. It could get very very very painful for him. If the pressure were too great, it could cause other complications for him.

I'd advise against it. Sorry - but the pain he is more than likely going to go through just isn't worth it. Nor is any other complication. Especially since he is still suffering after the original injury.


Pressure and head injuries are not a good combination. The pressure can thin the blood and cause a bleed.