Food Allergies in Cats

Last Updated on March 22, 2021 by Julia Wilson

  • Nonseasonal itching, especially on the front half of the body, head, face, ears, and neck
  • Otitis externa – Itching and scratching can lead to inflammation and sometimes infection of the ears
  • Excessive licking of the affected skin
  • Papules (small, fluid-filled bumps) which eventually burst and crust over
  • Hair loss (due to excessive scratching, grooming etc)
  • Feline acne
  • Vomiting
  • Diarrhea


  • Avoid food that caused allergies, by switching to a homemade diet using novel ingredients (such as kangaroo) or the use of a commercial hypoallergenic one. If you are feeding a homemade diet it is important to ensure that your cat is receiving the correct nutrients in the diet.
  • Corticosteroids to control itching. Unfortunately, not all cats will respond to this treatment.
  • Antihistamines to control the itching.
  • Antibiotics to treat skin infections caused by itching.

Julia Wilson is a cat expert with over 20 years of experience writing about a wide range of cat topics, with a special interest in cat health, welfare and preventative care. Julia lives in Sydney with her family, four cats and two dogs. She enjoys photography, gardening and running in her spare time. Full author bio Contact Julia