Short answer: hair loss around the eyes that exposes bare skin is often an allergic reaction to a specific protein or additive in the food, so if you've recently started a new food or treat, that should be your first suspect.
What are the 3 food-related causes of hair loss around the eyes?
① Protein sources that commonly trigger allergies, like beef or dairy ② Chemical additives such as artificial coloring or flavor enhancers ③ Sensitivity to grains or specific cereal ingredients. These three are the most common causes.
Why does it show up around the eyes first?
The skin around the eyes is thin and sensitive, so itching and inflammation from an allergic reaction often show up there before anywhere else. Cats that can't stand the itch may rub or scratch their face, causing even more hair loss.
How is this different from hair loss from overgrooming?
Hair loss from overgrooming usually appears in spots the tongue can easily reach, like the belly or inner legs, while allergy-related hair loss tends to appear on the face first — around the eyes, ears, or chin — often with red, swollen, or scabbed skin.
Will switching food fix it right away?
Since the triggering ingredient needs to be eliminated entirely, simply switching to a different food may not be enough. It's best to consult a veterinarian and try an elimination trial with something like a hydrolyzed protein diet.
What signs mean I should see a vet?
If the bald patch keeps spreading, oozes fluid, eye discharge worsens, or the swelling makes it hard for the cat to open its eyes, another infection may be involved alongside the allergy — see a vet right away.
