I'm really hoping someone has a cat that's gone through this. My kitten, Aziza, is almost a year now and has been dealing with an unknown allergy for about 3 months. It started a couple weeks after I brought home a second kitten, Mina, which was about 4 months after getting Aziza. Aziza developed rodent lips (ulcers on the lips) so the vet gave her prednisone and science diet d/d (a prescription diet to help the skin and uses venison instead of chicken). That combination worked well for a while but the rodent lips did come back. I believe they came back because I gave her a treat of some chicken at thanksgiving. The vet agreed that chicken was a likely cause and gave her more prednisone. Again the prednisone worked for a while. Then shortly after the new year the rodent lips started to come back. This time I gave her some benedryl right away and the lips healed up. As to the cause of that flare up, I think my pet sitter gave her the duck flavored d/d while I was away for Christmas. So it seems to me that she's just allergic to poultry, right? Except now she is losing fur. She is obsessively chewing at her self and causing bald spots. She's been away for poultry for almost a month now, I know it isn't fleas because I'm allergic to them and Mina is fine, and the d/d venison is supposed to help the skin. What could the cause be? Please help as I'm desperate to make my baby feel better!