Pathophysiology of Feline Chronic Gingivostomatitis and Juvenile Gingivitis, and insights into novel medical management
Feline chronic gingivostomatitis (FCGS) is one of the most frustrating and painful oral diseases seen in cats. For years, treatment options have been limited to painful full-mouth extractions or long-term steroids. But a new wave of science is offering hope—targeted antiviral therapy and innovative medical management may change the game for cats and their caregivers.
A New Hope for Cats with Gingivostomatitis: Antivirals and Modern Medicine Lead the Way
By Dr. Richard Malik & Dr. Andrea Harvey
Centre for Veterinary Education & Sydney School of Veterinary Science
What Is FCGS?
Imagine constant, burning mouth pain every time you eat or groom. That’s what life is like for a cat with FCGS. This severe disease affects the gums, mouth lining, and throat, causing inflammation far beyond what you’d expect from regular dental disease. Drooling, bad breath, weight loss, and reluctance to eat are common.
The Culprit: Feline Calicivirus
Research shows that FCGS is closely linked to feline calicivirus (FCV)—a stubborn virus that causes persistent infection in the mouth. However, not all cats exposed to FCV develop this condition, suggesting a genetic or immune-related trigger.
Why Old Treatments Fall Short
Traditionally, full-mouth dental extractions have been considered the gold standard treatment. While they help many cats, they come with high costs, risks of anesthesia, and often don’t fully resolve the disease. Steroids like prednisolone can suppress inflammation temporarily but may worsen viral infections and come with long-term side effects.
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