Take time to rest duncan. I went through a concussion but all of that has cleared pretty much except the extreme anxiety attacks / depression. But thats attributed to my PTSD which was linked to a past of anxiety previously, the accident just sent me off. When i'm not on the brink of some anxiety moment or attack i feel fine just a bit disconnected with depersonalization, which is normal with PTSD and people who suffer from an anxiety disorders. It sucks but I'll get through it too. Just be patient.