Cat Frostbite: Clinical Signs and Prevention

Did you know cats can get frostbite just like humans? Cat frostbite, usually frostbite on cat ears, is a common skin injury seen in cats that live in areas where the outside temperature dips below 32 degrees Fahrenheit/zero degrees Celsius. However, with the right care, injury from frostbite can be easily prevented. Let's take a closer look into what frostbite is, signs that your cat might have it and possible treatment options.

What Is Cat Frostbite?

Frostbite is damage to the skin caused by prolonged exposure to freezing temperatures. When skin is exposed to freezing temperatures, it constricts the blood vessels that supply blood to the skin. When this happens, the warmth, oxygen and nutrients that the blood delivers to the skin are diverted to maintain the body's core temperature. As a result, skin freezes, forming ice crystals inside skin cells that cause the cells to rupture and die. While this mechanism preserves the cat's life, cat frostbite can result in irreversible damage to the skin. The skin covering the extremities — including the tail, paws, nose and ears — is at the highest risk for frostbite.

The severity of frostbite is graded by degrees. First-degree frostbite is the mildest form that only affects the top layer of skin and usually doesn't cause permanent injury. Third- and fourth-degree frostbite occurs when the whole foot, leg, nose or ear freezes, resulting in permanent damage and disfiguration.

What Are the Clinical Signs of Cat Frostbite?

Clinical signs of cat frostbite are easy to identify. They include:

• Discolored skin (white, gray, blue, red, deep purple or black)
• Skin that becomes red, swollen and painful as it thaws out
• Blisters that can be filled with blood
• Skin or extremities that feel hard and cold
• Fragile, cold skin that breaks when you touch it
• Ulcers on the skin
• Dead skin that sloughs off

The signs of frostbite can take several days to weeks to develop, especially on the tips of the ears, and if the frostbite kills the skin, the skin will gradually become blacker and dead-looking until it finally falls off.

Any cat that lives outdoors where the temperature gets below 32 degrees Fahrenheit (zero degrees Celsius) is at risk for developing frostbite. Kittens and senior cats are also at a higher risk for frostbite, and any cats that have medical conditions that reduce blood flow to the extremities, such as diabetes mellitus, heart disease, kidney disease or hyperthyroidism, are also at an increased risk for frostbite.

What Should I Do if I Think My Cat Has Frostbite?

If you think your cat is suffering from frostbite, you can take the following steps to help your cat:

1. Bring your cat indoors to a place that's warm and dry.
2. If your cat is shivering, lethargic or feels cold, hypothermia may be a concern, according to Animed. Wrap your cat in towels warmed in the dryer to warm your cat up slowly.
3. Do not rub, massage or apply any lotions to any skin that seems to be frostbitten.
4. You can rewarm frostbitten skin with warm (not hot) water in a bowl — it should be cool enough for you to keep your hand in it. You can also use warm compresses. Gently pat the affected areas dry with a towel; don't rub the skin, and don't use hairdryers to warm the skin.
5. If you're unable to keep the cat warm (i.e., you're outdoors without any indoor spaces nearby), don't warm up any frostbitten skin unless you're able to keep it warm. If the skin thaws and then refreezes, it will cause additional injury to the skin.
6. Don't give your cat any pain relievers meant for humans — most of them are toxic to cats. Don't give any prescription pain medications to your cat unless directed by your veterinarian.

While caring for your cat with frostbite, it's also important that you call your vet as soon as possible — ideally while you're administering first aid. It's likely that your vet can give you some advice over the phone, but you'll probably need to take your cat to the vet for an examination.