Skip to content

Healthy Cats

Font Size

Lick Granulomas (Eosinophilic Granulomas) in Cats

Eosinophilic granulomas, formerly called lick granulomas, are a group of skin diseases producing ulceration and granulation of the skin. Some sores may be associated with an allergic skin disorder, such as feline miliary dermatitis, food hypersensitivity, or inhalant allergy. In others, the cat’s immune system may be suppressed by a condition such as feline leukemia.

Indolent (rodent) ulcers are most often found on the middle of the upper lip, occasionally on the lower lip, or in the mouth behind the last upper molar. The ulcer is not itchy or painful. It has the potential to develop into cancer.

Recommended Related to Cats

Aggression Between Cats in Your Household

Some cats just won’t give peace a chance. There are several reasons that cats might not get along. The most common is undersocialization—a lack of pleasant experiences with other cats early in life. If your cat grew up as the only cat, with little or no contact with other felines, he may react strongly when he’s finally introduced to another cat because he’s afraid of the unknown, he lacks feline social skills, and he dislikes the disruption to his routine and environment. Cats tend to prefer...

Read the Aggression Between Cats in Your Household article > >

Eosinophilic plaque is an itchy skin condition that occurs in young to middle-age cats (the average age is 3 years). It is characterized by well-circumscribed, raised, red plaques with hair loss. These plaques are found on the abdomen and inner thighs. They are believed to be caused by an allergy, including flea allergies. The diagnosis is made by a biopsy of the plaque.

Linear granulomas, also called feline eosinophilic granulomas, occur in kittens and young cats (the average age is 1 year), more often in females than in males. They are circumscribed, raised, and red but present a linear rather than a circular appearance. They occur on the backs of the hind legs, in most cases on both sides, one side being the mirror image of the other. Linear granulomas also involve the foot pads and may occur in the mouth or on the chin. This condition is believed to be the result of an allergy. Cases just involving the foot pads may be a reaction to something in the litter. Diagnosis is like that for eosinophilic plaque.

Mosquito bite hypersensitivity affects the bridge of the nose and tips of the ears and produces itching of the pads of the feet. Characteristically, you will see crusty sores with erosions and scabs. When the condition is severe and generalized, it is accompanied by fever and swollen lymph nodes. It disappears in winter (when there are no mosquitoes). Cats with hypersensitivity to mosquito bites should be kept indoors.

Treatment: Identify the underlying cause of the problem, if possible, and treat it accordingly. Chlorpheniramine (Chlor-Trimeton) can help relieve the itching. Cortisone can be administered directly into the sore by injection. Oral cortisone preparations are required in most cases. Intramuscular injections of methylprednisolone acetate have also been used. Treatment should be vigorous, because eosinophilic granulomas are difficult to treat and tend to recur. Veterinary supervision is essential.

WebMD Veterinary Reference from "Cat Owner's Home Veterinary Handbook"

Today on WebMD

cat at table
What's safe for them to eat?
Maine Coon cat breed
What they do and why cats have them.
Kitten in litterbox
How to solve them.
cat meowing
Why some cats are so talkative
cat on couch
Kitten using litter box
sleeping kitten
sad kitten looking at milk glass

Love your pets, hate your allergies?

Get tips for relief.

Loading ...

Sending your email...

This feature is temporarily unavailable. Please try again later.


Now check your email account on your mobile phone to download your new app.

cat at table
muddy dog on white sofa
Maine Coon cat breed
Pets: Behavior Problems in Cats