Petco Text Logo
Petco Pet Logo

Why is my cat's recurring hair loss & red skin eosinophilic granuloma?

Updated On September 23rd, 2025

Pet's info: Cat | American Shorthair | Male | neutered | 1 year and 7 months old | 12 lbs

My 1 1/2 year old neutered male cat has been having some hair loss. Some of the patches are very small and spread out. And there is one large patch of thinning hair at the base of his tail. One patch is reoccurring under his chin and it's very red and raw. His brother has eosinophiloc granuloma complex. Could he have it too or is this something else? What can I do to treat him? His appetite is fine, but he has been a little bossy towards my other cats. Thanks!

This question includes photos that may contain sensitive content. Click to view.

View more to consider that the photos may include sensitive content.

1 Answer

Most Helpful Answer

Image profile

Answered By Linda G, MS, DVM

Veterinarian

Published on January 26th, 2018

Hello. It is very difficult to diagnose a skin problem just by looking at it, & certainly harder by a picture. If this is similar to what your other cat has, then I might be suspicious of a mange mite called Demodex gatoi. I would first talk to your vet about treating both cats ( & any others in the house ) with Bravecto, just to rule this out ( it is also great for fleas). For EG, some cats will respond nicely to occasional steroid injections. You can also do a hypoallergenic diet trial to rule out a food allergy. Antihistamines sometimes will control symptoms, especially Certirizine ( your veterinarian can recommend a dose ), & some cats are being treated with a relatively new medication for allergies in dogs called Apoquel. So, once your veterinarian has confirmed what the skin lesions are, treatment can be started. Thank you for using Petco Pet Education Center, formerly Petcoach.

Vote icon

1Pet Parents found this answer helpful

image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored