Stomatitis
Feline stomatitis is a severe and extremely painful condition. This inflammation or ulceration affects the gums, cheek tissue, and tissues at the back of the mouth.
Cats with stomatitis have red and inflamed mouths. In addition, the cat loses their appetite due to pain and can develop malnutrition.
Although some cats respond to medical treatment and oral hygiene, most cats require the extraction of most or all of their teeth to experience relief from this painful condition.
Some breeds, such as the Himalayan and Persian, may be predisposed to this condition, but all cat breeds can suffer from stomatitis even before the cat is one year old.