Bump on chicken's head

[Jessica 123]

One of my chickens has a white hard bump on her head right above her beak and below comb. I have treated it like an open wound cleaned it and put antibiotic ointment, however it does not change. Appears to be hard, just wondering what it could be otherwise chickens have no other symptoms.

 

[Wyorp Rock]

Could be an injury from sticking the beak through wire or caught on a feeder. If it's not bothering her, I would leave it alone and see if there's any changes - better/worse/stays the same. Only if it gets worse would I mess with it at all.