A swollen face in a cat is alarming — and warrants prompt veterinary attention. Here are the most common causes and what each means.
Abscess — Most Common Cause
Dental abscesses and bite wound abscesses are the most common cause of facial swelling in cats. Cat bite wounds often appear minor externally but introduce bacteria that form a pocket of pus beneath the skin. Signs: localised firm or fluctuant swelling, pain when touched, lethargy, sometimes a discharge if the abscess has burst.
Dental Abscess
Infection of a tooth root causes swelling on the cheek or under the eye (upper teeth) or under the jaw (lower teeth). The cat may stop eating on one side, paw at their face, or drool. Treatment requires antibiotics, then dental extraction under anaesthesia.
Allergic Reaction
Swelling that appears suddenly — especially of the muzzle, lips, and around the eyes — may indicate an allergic reaction. Other signs: itching, hives, breathing difficulty. If breathing is affected, this is an emergency.
Tumour
Slow-growing facial swellings, especially in older cats, may indicate a tumour. Squamous cell carcinoma is the most common facial tumour in cats — often starting on unpigmented areas of the nose or ears.
Feline Acne
Black spots and swelling on the chin are typically feline chin acne — a follicular disorder. Milder than it sounds, usually manageable with cleaning and sometimes prescription treatment.
Action: See a Vet
Any unexplained facial swelling should be assessed by a vet. Abscesses need drainage and antibiotics. Dental disease needs treatment. Allergic reactions may need emergency treatment.