Well thats why insaid i didnt know where all the air sacs were located. Theres like 3 seperate systems of them. But yes, air can travel beneath the skin and pool in a different location.
I'm not sure where the air sacs are located, but its probably a ruptured air sac. Chickens don't have lungs like us, they have a series of different oxygen filtering methods. People often stick a needle in them to deflate them, but im not so sure that would be ok in a frail chick. Someone else...
Vitamin E is whats mostly recommended to treat wry neck. Its most of the time due to a Vitamin E deficiency. I bout mine at dollar general. The human kind in the liquid gels. The wry neck in mine started to get better within two days but unfortunately it had no many problems and i had to cull...