Quote Originally Posted by MissKit View Post
It's the only thing we can think of. She's eating Purina One food right now. And Iams wet food (which they ate at the shelter and is pretty much the only wet she'll eat). We thought it was from the plastic bowls we had before. The vet suggested to change them to stainless steel but it hasn't helped. Which made me think maybe I wasn't doing a good job of cleaning the floors.

She's been on this food for 8 months now and she just started having this problem about a month ago. She's 11 months old. Can an allergy come out of no where like that? Or is there something we're doing differently in the last month that could have caused this?
Sadly, allergies CAN come out of nowhere. I can attest to that, from personal experience!

Purina One has many different kinds, I would look for a grain-free food, or a simple lamb and rice one, and try transitioning her onto that to see if it goes away.

Cats do not NEED grain - corn is often the cause for a cat's allergies, or wheat, and when I looked at the Ingredient list for Purina One Inddor only, it said
:Turkey, brewers rice, corn gluten meal, poultry by-product meal, soy flour, whole grain corn, fish meal, dried yeast, powdered cellulose, soy protein isolate, animal fat preserved with mixed-tocopherols (form of Vitamin E), :
most of which is not good for cats to ingest! The turkey is fine, but everything else is an immediate red flag!