My cat has crusty mouth corners. Is it a rodent ulcer or new issue?

Question

the corner of my cat's mouth is crusty. he's had rodent ulcer before but it's always been on his lip right under his nose and it usually heals in a few days. i've never seen this before on the corner of his mouth. Pet's info: Cat | American Shorthair | Male | neutered | 1 year and 1 month old | 11 lbs

Dr. Leigh, DVM · Accepted Answer

He could have an ulcer in a different location, infection, or stomatitis. You could clean the crusty discharge away and monitor but if it continues, he stops eating, or becomes lethargic than he should be examined by a vet. Your vet can do an oral examination to check for lesions, infection, or inflammation in his mouth.

My cat has crusty mouth corners. Is it a rodent ulcer or new issue?

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