Would you believe that your cat can get a rash on her mouth because of contact with a plastic food dish? It is rare, but not unknown. Human skin and cat skin are both subject to contact dermatitis, which happens when the skin comes into contact with a substance that causes a rash, usually with itching. The common culprits in human contact dermatitis are plants like poison ivy and poison oak.
Individual cats are sensitive to certain plants, and also to some household chemicals, and some cats can’t wear a collar because the leather or plastic makes their neck skin break out. And, as mentioned earlier, some cats break out in a rash because of their plastic food dishes. Also, as already noted in 239, ﬂea collars are a prime cause of contact dermatitis.