My cat has a recurring rodent ulcer. Should I try lysine or omega?

I'm so sorry that you are dealing with this with Vivian. The location is a little abnormal for a rodent ulcer, so I would probably recommend more dermatology diagnostics (especially in an 11 year old cat if she hasn't had problems with this before). That may include a skin scraping or cytology of the area or even a biopsy of the area. Sometimes challenging skin problems require a referral to a veterinary dermatologist for a diagnosis. You can find a veterinary dermatologist near you here. https://www.acvd.org/tools/locator/locator.asp?ids=16_Find_Dermatologist If all results still point to a rodent ulcer, there are other medications you can try that will suppress the immune system. I have included more information on feline eosinophilic granuloma complex below. https://www.veterinarypartner.com/Content.plx?P=A&S=0&C=0&A=656 Good luck! I hope that was helpful. Thanks for using PetCoach.

Rodent ulcers, or eosinophilic granuloma complex, are typically allergy related. Identifying and treating the underlying allergy is the foundation for treatment. Have Sophie examined by your veterinarian. Discuss allergy testing, hydrolyzed diets and food elimination trials. Your vet can dispense or administer steroids to decrease inflammation and antibiotics to treat any infection.

This appears to be what is commonly referred to as a 'rodent ulcer'. The most common cause for these to pop up in cats is an allergy, typically to something in the food. Sometimes these will resolve in their own, however sometimes they can become infected, long lasting, and problematic. If they become very large and painful it can discourage the cat from wanting to eat. If this ulcer has been present for more than 2 weeks it is probably not going to go away on its own. At that time I would recommend taking you cat to the vet for treatment. Nathaniel may need antibiotics and an immunsuppresive drug like steroids or Atopica. If the lesions keep coming back he may need to be on an immunosuppressive long term and/or a hypoallergenic diet. I hope this helps. Thanks for using Petco Pet Education Center, formerly Petcoach. Best of luck.

Poor Sedrick. Most cats with rodent ulcers and severe allergies like this need antibiotics and steroids to heal. I would have your vet take a look at him. Your vet will be able to prescribe him the appropriate medicine to help him feel better. If you don’t think you can give pills, talk to your vet about an injectable options as there may be an antibiotic and steroid available so you don’t have to treat at home. Also make sure you start I’m on a high quality flea preventative like comfortis, cheristan, or advantage multi. Fleas also live in the environment so make sure you treat your house and yard for fleas as well. I hope this helps.

Hello. Thank you for using PetCoach. So sorry that Max has not been feeling well. The lesion in the photo could be a rodent ulcer but I have honestly never seen one in a kitten this young. My first thought would be that this is a calicivirus lesion. Does he have any lesions/ulcers inside his mouth? Here is a link to an article about calicivirus in cats: https://vcahospitals.com/know-your-pet/feline-calicivirus-infection Many rodent ulcers do not go away on their own without treatment with steroids which is not indicated to do since he has been ill. Most calicivirus lesions will go away on their own within a few weeks. Hope this helps. If you have more questions feel free to post again. Best wishes.

Poor kitty! Unfortunately he needs to see a vet to be treated. This condition often requires oral or injectable steroids for treatment, which is not available over the counter. If cost is a factor in your ability to get him to the vet, you can refer to this site for ideas on how to help with the cost http://www.humanesociety.org/animals/resources/tips/trouble_affording_veterinary_care.html

Hello, and thank you for your question and great photos. It certainly looks much improved on the mupirocin, but there still seem to be a few scabs present, so I would probably continue the cream for another week. If it is fully healed, the hair should eventually grow back. However, if the rodent ulcer is due to an underlying allergy, and the allergen is not eliminated from her environment, then her lesions may come back once the cream is discontinued. I hope this makes sense! I hope that Vivian heals well.