Cats can develop allergies or “intolerances” to ingredients commonly found in commercial cat foods. The most common ingredients that cause allergies are chicken, fish and corn, as well as grains and dairy products. However, an allergy can develop to any protein to which the cat is repeatedly or constantly exposed, and sometimes, allergies develop over time.
Symptoms of food allergies
Food allergies may manifest as itchy skin, rashes or excessive grooming, or as digestive symptoms, including vomiting or diarrhea. Digestive symptoms often mimic those of inflammatory bowel disease.