I have a 2 week old Americuana chick that also got pecked on the head I'm assuming since birth (I only recently concluded that) the lump on the head had been looking better then got worse so I think the other chicks were pecking on it, so I now isolated "baldy" in an area with the others but they can't touch it an (old fish tank with heat lamp). Used neosporin and peroxide. It is also physically smaller than the others and has not developed at the same rate but does seem to eat and drink normally.
Very similar to your description. Keep us posted on the progress of your chick. I hope for the best.
Very similar to your description. Keep us posted on the progress of your chick. I hope for the best.