Eosinophilic Granuloma Complex
by Kurt (Admin)
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:
Wikipedia refers to:
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