Chicken nervous disorder after attack.

[nicheniga]

My 10 week old chick was attacked by a mongoose in the head. it was injured in the head on both left and right side,near the ears. I gave him first aid. He has pretty much not moved alot. He doesn’t eat on its own i have to force feed. Yesterday he stood up a walked a bit and was looking in better shape but today he has tilted towards his left and his eye is weird. Took him to the vet he said its a nervous disorder. Does anyone here have any similar experience and can give me some help. ? Pics attached

 

[Callender Girl]

Does the vet mean a neurological disorder, something physical, or a nervous reaction to the terror of being attacked, paired with the physical harm?