TL;DR: A hot, swollen paw usually indicates infection or inflammation, such as a cat bite abscess, and requires a veterinary exam within 24 to 48 hours unless the cat is also lethargic or feverish.
What does it mean if my cat's paw is swollen and hot to the touch?
- Localized inflammation or infection, most commonly caused by a cat bite abscess.
- An insect sting or localized allergic reaction.
- A puncture wound from a foreign object, such as a thorn.
- Increased blood flow as the immune system attempts to fight off the underlying issue.
Is my cat's swollen, hot paw considered a veterinary emergency?
- This is classified as a Medium urgency, requiring a veterinary exam within 24 to 48 hours.
- Potential for the infection to spread to the bloodstream (sepsis) if left untreated.
- Immediate care is necessary if the cat is also lethargic, feverish, or refusing to eat.
How does sending a photo of the paw help the veterinary team?
- Allows professionals to identify specific triage markers like puncture sites, stingers, or skin necrosis.
- Helps the vet distinguish between a fluid-filled abscess requiring drainage and firm tissue inflammation.
- Saves time during the appointment by providing visual information for an early treatment plan.
Clinical Context (Merck Veterinary Manual)
In cats, a swollen back paw that is hot to the touch can be associated with several conditions. Arterial thromboembolism can cause pain, paresis or paralysis of the hindlimbs, reduced or absent arterial pulses in the affected limbs, limbs cooler than normal, and firm, swollen gastrocnemius muscle bellies. Plague (Yersinia pestis infection) can manifest with cellulitis or skin abscesses. Severe increases in body temperature (>105.5°F/40.8°C) can occur with infectious, inflammatory, or neoplastic diseases. Mild hypothermia can be a sequela of severe cardiovascular disease and a prognostic marker in cats with limb thromboembolism.
Chapter: Cardiology, Neurology, Emergency
Source: The Merck Veterinary Manual, 11th Edition (Page 143)