So for the past 3 weeks on of my hens has an extremely swollen comb. It is firm and warm to the touch, I know warmth can be a sign of infection. I then started treating her with Tylan 50 but no improvement. The hen has no other symptoms and seems to be in no pain even when I touch the comb or gently squeeze it. Laying eggs, eating, drinking, pooing normally. Any ideas? A vet is not an option right now. Someone suggested Epsom salts but not sure how to go about doing that. Please help!