Eosinophilic Granuloma Complex

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Eosinophilic Granuloma Complex

by Kurt (Admin)

Lip Ulcer

What is eosinophilic granuloma complex? I'm building a resource page on this disease as it affects cats, and need your help. If you have any experience with this disease, or know of any resources on the subject, please let us know in the comments. Thanks!

This disease is actually a group of skin conditions referred to as EGC, with various suspected causes. There are some discrepancies in the information I've found, including causes, types and names. Below are some highlights of what I have found so far.

The Merck Veterinary Manual mentions three types:

Eosinophilic ulcer
Eosinophilic plaque
Eosinophilic granuloma

Wikipedia refers to:

Lip ulcer
Eosinophilic plaque
Collagenolytic granuloma (called linear granuloma when it forms linear flat-topped raised hairless lesions on the back of the hind legs)

Wikipedia also mentions a fourth type, the least common type, which is caused by a mosquito bite allergy. Called atypical eosinophilic dermatitis, the lesions usually appear on areas with less hair, such as the bridge of the nose, the tips of the ears, and the pads of the feet.

The Merck Veterinary Manual says that allergies to "fleas, food, or inhalants" may be at fault. So, allergy testing and dietary elimination trials are recommended. Idiopathic cases exist as well, meaning the cause is unknown.

PetMD state that "eosinophilic granuloma complex is restricted to cats" and that eosinophilic granulomas that occur in other species, including dogs, are not part of the eosinophilic granuloma complex as related to felines. They also mention that breed does not play a role.

If you have any information on this disease, please leave a comment.

Photo credit: Eosinophilic granuloma (Wikipedia) / CC 2.5

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Eosinophilic Granuloma Complex

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Feb 22, 2012
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Finally, after 4 vets, this diagnosis makes sense
by: Joy D

My 11 year old calico has had a rash on her lower stomach off and on since she was spayed. Over the years, it stayed intermittent, but for the last few years has been constant, and would worsen from time to time.

Since Thanksgiving '11, she has had 3 episodes of bleeding from the mouth and the latest vet that saw her suggested this condition. She responds very well to steroid treatment, and I have no problem keeping her on steroids for the rest of her life, provided they continue to be effective.

Oct 12, 2011
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My cat has it
by: Anonymous

Hello, my cat has had egc since he was a few weeks old, came out right after his rabies vaccine, and I had tried the veterinarian way of steroids, shots, and recommendations, and have found holistic approaches to be the best controllers.

I've changed his litter, feed, environment and it does go away, and it is self limiting, but the holistic vet that has treated it successfully in the past and can prove cures are out there, and that approach has the best control.

There is no need to remove lesions, get upset over how it looks or keep your cat on dangerous drugs. The cat is fine, he won't be covered from head to toe in lesions, and being persistent at trying what works is your best approach.

Don't panic, and try holistic, it isn't harmful and you can always go back to the vet if you need to, though the two treatments clash, as the vet treats the symptoms and not the cause.

By the way, I believe my cat's symptoms became much worse from being vaccinated too much, and since their immune system is down, I don't recommend vaccinating your cat until the symptoms have subsided for at least 6 months, so ignore the vet's postcards that you are behind on your vaccinations!!!

You wouldn't vaccinate a child with cancer, so you shouldn't vaccinate a cat with immunity problems!

My holistic vet said, if he gets distemper, or leukemia or any other disease we'll treat it! If he gets rabies, we'll treat it (though the state rules on pet care might beg to differ!) best of luck to all of you...

Just change the bedding constantly (I use a few rags in a box from the grocery store, easy to wash or replace for him to sleep in) and don't gross out and keep him off the good furniture. You will find what ails him, when you keep trying different things like prescription or raw food (Feline's Pride), supplements etc.

Aug 10, 2011
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My cat has just been diagnosed!
by: Anonymous

Thank you for this informational page. My cat has just been diagnosed, and the vet had minimal information for me. I had to look up basically everything I learned about it on the Internet.

My cat has the rodent lip ulcers, the foot pad ulcers, and the rash on her stomach. She was given a steroid injection, her foot was cleaned out, and I was sent home with antibiotics for her.

I am doing more research on my own. A good source of information is on the animal discussion group on ebay!

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Eosinophilic Granuloma Complex

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Eosinophilic Granuloma Complex