Mange in Cats

Causes, Treatment, and Prevention

Reviewed by Monica Tarantino

Mange in cats is a skin disease caused by parasitic mites, which are tiny arachnids related to spiders and ticks. Though it's more common in dogs than cats, there are several different types of mange that affect felines. Some types of feline mange, such as scabies, are contagious to humans as well as dogs and many other mammals. This unpleasant condition causes itching, skin damage, and hair loss in the affected areas.

Both indoor and outdoor cats of any age are at risk for getting these external parasites, but there are things you can do to minimize their chances of infection. Here's how to identify the different types of mange in cats, plus how to treat and prevent mange to keep your kitty comfortable.

What Is Mange?

Mange in cats is a skin condition caused by an infestation of mites, which are very tiny parasitic arachnids with eight legs attached to a round body. Some types of mange mites are too small to be seen with the naked eye, while others look like tiny black or white dots. Depending on the type of mite, these pests may live off ear wax, bite the surface of the skin, or burrow into your cat's skin. All types of mite infestations can cause discomfort and itchiness in cats.

Types of Mange in Cats

There are several types of mites that cause mange in cats. The most common are scabies, demodex, ear mites, and walking dandruff. Less commonly, trombiculosis can affect cats.

Scabies

Scabies is usually caused by Sarcoptes scabei (sarcoptic mange) but can also be caused by Notoedres cati (notoedric mange) mites. Scabies is highly contagious not only to cats but also to dogs and humans. The female scabies mite burrows into the host's skin and lays eggs just underneath the surface, causing an extremely itchy rash.

Demodicosis

An infestation of demodex mange mites is called demodicosis, which can infect cats and dogs. Both Demodex cati and Demodex gatoi mites can cause demodicosis. D. cati is thought to be a normal resident of a healthy cat's skin but can cause demodicosis in an unhealthy cat or a cat with a weak immune system. D. gatoi is a very contagious type of demodex and is more likely to be found on young cats. Demodicosis leads to hair loss, along with crusted, inflamed patches of skin.

Ear Mites

Like the name implies, ear mites are found in the ears of cats, although they can also infect dogs. Otodectes cynotis are referred to as otodectic mange mites and are one of the most commonly seen types of mange in cats. Occasionally, these mites will infect the skin on the cat's body as well as inside the ears. Ear mites feed off dead skin cells, oil, and ear wax inside the cat's ear, rather than biting the skin, but they cause a very itchy inflammation in the delicate skin of the ear.

Walking Dandruff

Cheyletiella blakei are mange mites that cause walking dandruff, also known as cheyletiellosis. The condition gets its name from the appearance of the mites, which, to the naked eye, slightly resemble bits of dandruff moving through the animal's fur. Walking dandruff is highly contagious to dogs and humans, as well as cats and even rabbits. The bites of these mites leave an itchy rash on the skin.

Trombiculosis

Cats get trombiculosis from mange mites in the Trombiculidae family. In their larval stage, these mites are often called chiggers. The larval mite attaches to the skin and fur of its host, which can be a cat, dog, or human, along with many other warm-blooded animals. Chiggers are most common in the summer and autumn months. Contrary to common misconceptions, chiggers do not burrow underneath an animal's skin, but bite and inject digestive enzymes into the skin, leading to reddened, inflamed bumps or blisters.

Symptoms of Mange in Cats

Excessive itching, hair loss, and redness are the most common symptoms of mange mites in a cat. Skin crusting and small skin bumps may also be seen in some cats with mange. If the mange is located in the ears of a cat, a cat will also have excessive ear debris that is dry and dark when compared to normal ear wax. When mange is severe, there can be a foul odor to the infected areas, as well.

Itching

Mange of all types is an intensely itchy condition. Your cat will scratch frequently and intensely at the infected areas, and often will also bite and lick the areas as well in an attempt to gain relief. This scratching can lead to further skin inflammation and irritation, along with secondary bacterial infections.

Hair Loss

Most types of mange cause inflammation in the skin and hair follicles, which leads to patchy bald spots in the areas of infection as hair falls out of the damaged follicles. The intense scratching caused by mange also damages and loosens hairs, furthering hair loss. Fortunately, the fur generally grows back once the mange is treated.

Skin Bumps

Most forms of mange cause a rash on the host's skin, usually in the form of small, reddened bumps or blisters. Scratching the itchy rash can damage the skin further, and lead to secondary bacterial infection.

Skin Crusts

Whitish, yellowish, or grayish crusts over the inflamed areas are very common with mange. This may look like dry skin at first, but it may get worse. If untreated, the crusts can thicken, giving the affected skin a wrinkled, leathery appearance.

Reddened Skin

Skin inflamed by mange typically becomes pink or red, particularly in the areas your cat scratches the most.

Ear Debris

If your cat has ear mites, you'll typically see black, red, or yellow debris in the ear canals, often in clumps sticking to the skin or hair. Your cat will shake their head, scratch their ears, or paw at the ears in an effort to relieve the itch.

Causes of Mange

Most mange mites are contagious, so they are easily spread if your cat interacts closely with an infected cat, or even with bedding that an infected cat used. Some mites are also found in the environment and can hitch a ride on your cat if it roams outdoors. Other mites, like Demodex mites, are naturally present on your cat and only cause issues if your cat's immune system is compromised.

Generally, mange is far more common on cats that spend time outdoors and less common on cats that are indoor-only. Still, any cat is potentially at risk for this itchy skin condition. Mange is especially common among feral cats that congregate in colonies.

How Vets Diagnose Mange in Cats

If you suspect your cat has mange, your veterinarian will perform a full physical examination of your cat and take some small scrapings of the skin, fur, or ear debris depending on the affected area. They will examine these samples under the microscope to look for the mites or mite eggs.

Your veterinarian may also want to draw blood and run tests to look for underlying diseases that might have led to a weakened immune system, thus making your cat more susceptible to mange. Diabetes, feline immunodeficiency virus (FIV), and feline leukemia virus (FeLV) are some of the diseases that can weaken a cat's immune system.

Treatment

With treatment, mange is quite curable, although it can take persistence and patience to eliminate all of the mites and their eggs. Various anti-parasitic drugs are used to kill mange mites. Depending on the type of mite and the severity and location of the infestation, your veterinarian will recommend either a topical, oral, or injectable medication, although topically applied gels, liquids, and ointments are most common.

Some of the most prescribed topical medications for mange include ivermectin, selamectin, and fipronil. Less commonly, your vet may prescribe medicated dips or baths. Do not attempt to treat your cat with any of the above medications mentioned without veterinary guidance, as improper doses of these medications can be toxic to cats and even cause death. Generally, these treatments are applied weekly for several weeks until your pet tests clear of mites and mite eggs.

Ear mites can often be treated with topical or oral antiparasitic drugs, but your cat's ears will first need a good cleaning. Medicated ear drops may be prescribed in some cases and are typically applied once or twice a day for several days until all signs of mites are gone.

If you have other pets in the home, your veterinarian might recommend that all of them be treated, even those not showing signs of mange, to ward off the spread of the mites.

Prognosis for Cats With Mange

While the itching and discomfort can be intense, fortunately, mange is curable in cats. Should your cat be infected with mange, follow your veterinarian's guided treatments and keep it in an isolated area away from any other pets in the home until the mange is gone. Take care to wash all bedding or other surfaces where the cat might have slept.

How to Prevent Mange

The best way to prevent your cat from getting mange is to use vet-recommended preventatives and keep your cat indoors where they won't be exposed to stray animals that might be carrying mites. A healthy diet will help keep your pet's immune system strong and regular veterinarian visits can help detect illnesses before they become serious enough to weaken the immune system and make the cat more susceptible to infection.

Some topical treatments used to prevent flea and tick infestations also work to kill various types of mange mites. If your cat must go outdoors, ask your veterinarian if they recommend one of the following:

• Selamectin (Revolution)

• Moxidectin (Advantage Multi)

• Sarolaner (Revolution Plus)

• Fluralaner (Bravecto)

These same drugs may also help protect your cat against fleas, heartworms, ticks, and intestinal parasites and are often recommended for indoor-only cats as well out of precaution.

Is Mange Contagious to Humans?

Some types of mange are contagious not only to other pets, including cats, dogs, and rabbits, but also to humans. Sarcoptic mange (Sarcoptes scabei) is the most common type of zoonotic mange, meaning it can spread from an animal to a human. Other types of mange mites are typically self-limiting in people, but can be very itchy and distressing during the active infection.

Frequently Asked Questions

How contagious is mange in cats?

Many forms of mange are highly contagious and cat spread easily between cats.

How much does it cost to treat mange in cats?

The price range to treat mange will vary based on your location and type of treatment. Between vet exams, testing, and treatment (which involves weekly dips in a lime-sulfur solution) expect to pay at least a few hundred dollars, if not more.

How does mange start in cats?

Mange is caused by teeny parasites; the first sign of a problem is itchy skin, patchy hair loss, and excessive licking/biting.

Read the original article on The Spruce Pets.