In more severe cases cats can also develop inflammation and. They seem to cause no pain. 1 In 3 Cats Will Develop Kidney Disease Make Sure You Know The Signs Cat Diseases Cat Care Cat Illnesses Symptoms of Oral Ulcers in Cats. . Therefore we can also rely on a series of indirect symptoms which are a consequence of oral wounds. Oral ulcers in cats occur on the mouth and gums and can cause painful inflammation. Symptoms Of Ulcers In Cats. They most commonly present on the upper lip but can also occur on the bottom lip tongue or behind a molar. Seeming to act lethargic. The cat may vocalize and jump when it yawns or opens its mouth to pick up food. Symptoms of stomatitis in cats may include decreased appetite excessive drooling redness in the gums and an unkempt coat. Most pet owners realize their cat has developed a health problem after noticing some or all of the following symptoms. Inability to consume foo...