Scabies in cats is caused by tiny burrowing mites that tunnel into the skin, triggering intense irritation, crusty lesions, and sometimes severe secondary infections. Two mite species are responsible for almost all feline cases: Notoedres cati, which is the classic “cat scabies” mite, and Sarcoptes scabiei, which more commonly affects dogs and foxes but occasionally crosses over to cats. The condition is uncommon compared to fleas or ear mites, which is part of what makes it tricky: many cat owners and even some veterinarians don’t immediately recognize it. Left untreated, mange can become life-threatening, but modern treatments are highly effective when the diagnosis is made early enough.
Two Different Mites, Two Different Stories
The mite most closely associated with cats is Notoedres cati. It burrows into the outer layers of skin, primarily around the head, ears, and neck, and completes its entire life cycle on the host animal. Notoedres cati is considered host-adapted to cats, meaning it strongly prefers felines and reproduces most successfully on them. Wild felids can also carry it; researchers have documented notoedric mange in bobcats and other wild cat species, raising concerns about its potential to spread through wild felid populations.
1PubMed. Notoedric mange in the bobcat, Felis rufus, from south TexasSarcoptes scabiei, by contrast, is a generalist. This is the same mite behind human scabies and sarcoptic mange in dogs, foxes, and many other mammals. Cats can pick it up from infected dogs they live with or from wildlife in their environment. A case series describing four cats with sarcoptic mange found that two lived in areas frequented by foxes, one shared a home with a dog recently diagnosed with the condition, and another lived with a dog that had been treated for sarcoptic mange months earlier.
2PubMed Central. Crusted scabies (sarcoptic mange) in four cats due to Sarcoptes scabiei infestationBoth mites cause disease in essentially the same way: they burrow into skin, deposit eggs, and provoke an immune reaction. A review of both species describes four distinct ways they harm their hosts: direct tissue damage to the skin, loss of body fluids through damaged skin barriers, allergic reactions triggered by mite proteins and feces, and secondary bacterial infections that colonize the broken skin.
3Fauna norvegica. The taxonomy, life cycle and pathology of Sarcoptes scabiei and Notoedres cati (Acarina, Sarcoptidae): A review in a Fennoscandian wildlife perspectiveWhat Scabies Looks Like in a Cat
In a typical notoedric mange case, you’ll see thick, crusty, grayish-yellow patches of skin starting around the edges of the ears and spreading to the face, eyelids, and neck. The skin often becomes wrinkled and thickened, almost like elephant hide. Affected cats scratch intensely, and the constant trauma from their own claws can create raw, bleeding areas vulnerable to infection. Hair loss is usually dramatic in the affected zones.
Sarcoptic mange in cats can look somewhat different and, surprisingly, may not always be itchy. In the case series of four cats with Sarcoptes scabiei, pruritus (itching) was not a prominent feature in any of the cats and was considered entirely absent in three of the four. Lesions were found on the head in most cases, with one cat also showing involvement of the hind limbs. Three of the cats with long-standing disease developed thick, crusted lesions similar to what human dermatologists call “crusted scabies,” a severe form of the disease seen in immunocompromised people.
4PubMed Central. Crusted scabies (sarcoptic mange) in four cats due to Sarcoptes scabiei infestationThat absence of itching is worth pausing on, because most pet owners and many veterinary references describe mange as an intensely itchy condition. For notoedric mange this is generally true. But the sarcoptic form in cats sometimes produces heavy crusting without obvious scratching behavior, which can delay diagnosis. If your cat develops progressive crusty patches on the face or ears but doesn’t seem bothered by them, mange should still be on the list of possibilities.
When Mange Becomes Dangerous
Mange in cats is not just a skin problem if it goes unchecked. Without treatment, the mites continue to reproduce and spread across the body, and the resulting skin damage opens the door to widespread bacterial infection. Untreated sarcoptic mange can cause generalized life-threatening lesions, severe debilitation, and diffuse secondary bacterial infections.
5PubMed Central. An Uncommon and Severe Clinical Case of Sarcoptes scabiei Infestation in a CatCats that are malnourished, very young, elderly, or immunocompromised are at the highest risk for this kind of progression. The crusted form of scabies, in particular, involves massive mite populations on the skin because the immune system isn’t mounting a strong enough response to keep numbers down. In humans, crusted scabies occurs almost exclusively in people with suppressed immune systems, and the same pattern seems to hold in cats. Stray and feral cats that are already in poor body condition are the ones most often found with advanced, generalized mange.
How Veterinarians Diagnose It
The standard diagnostic method is the skin scraping. A veterinarian uses a scalpel blade to gently scrape the surface of a crusty lesion, collects the skin debris onto a glass slide, and examines it under a microscope looking for mites, eggs, or fecal pellets. For both Notoedres cati and Sarcoptes scabiei, the mites have characteristic sizes and shapes that allow identification. In three of the four cats in the sarcoptic mange case series, diagnosis was confirmed by identifying mites in skin scrapings from head lesions.
6PubMed Central. Crusted scabies (sarcoptic mange) in four cats due to Sarcoptes scabiei infestationFor notoedric mange specifically, an acetate tape impression test offers an alternative that’s sometimes more practical. This involves pressing a strip of clear adhesive tape firmly against the lesion and then examining it under the microscope. A study comparing the tape method to traditional skin scraping found no significant difference in the number of mites detected by either technique, with a high correlation between the two methods. In a couple of animals, though, the tape test picked up mites that the scraping missed, which suggests the tape impression test may occasionally be the more sensitive option.
7PubMed Central. Acetate tape impression test for diagnosis of notoedric mange in catsFalse negatives are a real concern with skin scrapings in general. Mites can be present in small numbers, especially early in the disease, and a negative scraping does not rule out mange. Veterinarians sometimes make a presumptive diagnosis based on clinical appearance and known exposure history and then start treatment as both therapy and diagnostic test: if the cat improves, that confirms the suspicion.
Treatment Options
Mange in cats was historically more difficult to treat than in dogs, partly because several antiparasitic drugs commonly used in dogs are either toxic or poorly studied in cats. The good news is that modern spot-on products have simplified feline mange treatment considerably.
A combination product containing selamectin and sarolaner has shown strong results against notoedric mange. In a controlled study of naturally infested cats, a single topical application eliminated all live Notoedres cati mites within 30 days, achieving a 100% parasitological cure rate that held through day 60 of follow-up. Clinical signs of mange improved by day 30 and had resolved entirely by day 60.
8PubMed Central. Efficacy of a spot-on combination product containing selamectin and sarolaner (Stronghold Plus) in the treatment of naturally occurring Notoedres cati infestations in catsA broader review of selamectin-sarolaner studies confirmed this finding, reporting complete elimination of Notoedres cati within 30 days across single-dose studies.
9PubMed. A review of the parasiticidal efficacy of a selamectin plus sarolaner combination for use on catsIvermectin, either injectable or oral, has also been used for mange in cats and is effective, though it requires multiple doses over several weeks and carries a somewhat higher risk of side effects in certain cats. Lime sulfur dips are another older treatment that works but is messy, smells terrible, and requires repeated weekly applications. Most veterinarians today reach for the spot-on options first because they’re simpler and better tolerated.
Regardless of which drug is used, a few principles apply. All cats in the household need to be treated, even if they appear unaffected, because they may be carrying mites without showing symptoms yet. Bedding should be washed in hot water, and shared resting areas should be cleaned. If the cat has secondary bacterial skin infections, these need to be treated with appropriate antibiotics alongside the antiparasitic. Underlying health problems that may have made the cat susceptible in the first place, such as poor nutrition or immunosuppression, should be addressed as part of the overall treatment plan.
10Companion Animal. Burrowing mites in companion animalsThe Permethrin Danger
One of the most important safety warnings around treating any external parasite in cats, including mange, involves permethrin. Permethrin-based spot-on products are widely available for dogs and are effective flea and tick treatments for canines. They are, however, highly toxic to cats. Cats lack certain liver enzymes needed to metabolize permethrin, so even small amounts can cause severe poisoning.
The scale of this problem is not trivial. A review of 286 cases of feline permethrin spot-on exposure reported to the UK’s Veterinary Poisons Information Service found that nearly 97% of exposed cats developed symptoms. Tremors, twitching, and convulsions occurred in about 88% of cases. Convulsions lasted an average of roughly 39 hours, and tremors about 32 hours. Death occurred in about one in ten cases.
11PubMed Central. Clinical effects and outcome of feline permethrin spot-on poisonings reported to the Veterinary Poisons Information Service (VPIS), LondonAn Australian study of 42 cases painted a similarly grim picture. Common signs included tremors, muscle twitching, heightened sensitivity to touch, seizures, and fever. Complications developed in a third of the cats, including dangerously low body temperature, electrolyte imbalances, aspiration pneumonia, and in rare instances respiratory or cardiac arrest.
12PubMed Central. Feline permethrin toxicity: retrospective study of 42 casesHow does this keep happening despite label warnings? A survey of Australian veterinary practitioners found 750 individual cases of feline permethrin spot-on poisoning over a two-year period, resulting in 166 deaths. Of those deaths, 39 cats were euthanized because their owners couldn’t afford the anticipated cost of intensive treatment rather than because the poisoning itself was necessarily fatal. Most cases involved products clearly labeled “toxic to cats” that owners had applied to their cats either accidentally or intentionally, sometimes assuming that a smaller dose would be safe. In other cases, cats were poisoned through secondary contact after the product was applied to a dog in the same household.
13PubMed Central. Permethrin spot-on intoxication of cats Literature review and survey of veterinary practitioners in AustraliaThe takeaway here is stark: never apply a dog flea or tick product to a cat without confirming it is specifically labeled safe for cats. If you have both dogs and cats in the household and you treat a dog with a permethrin-based product, keep the dog separated from the cat until the product has fully dried, and ideally longer. If a cat is accidentally exposed, get to an emergency vet immediately. With aggressive supportive care, most cats survive, but the recovery process can take days and may involve hospitalization.
Can You Catch Scabies from Your Cat?
Yes, temporarily. In the case series of four cats with sarcoptic mange, three of the in-contact human caregivers developed itchy raised bumps on their skin.
14PubMed Central. Crusted scabies (sarcoptic mange) in four cats due to Sarcoptes scabiei infestationBoth Sarcoptes scabiei and Notoedres cati can transfer to humans, but when they do, the resulting condition is typically called pseudo-scabies. The mites are on a non-preferred host and generally cannot complete their full reproductive cycle on human skin. This means the infestation is often self-limiting: the itching and rash resolve on their own once the animal source is treated.
15Fauna norvegica. The taxonomy, life cycle and pathology of Sarcoptes scabiei and Notoedres cati (Acarina, Sarcoptidae): A review in a Fennoscandian wildlife perspectiveThat said, the itching can be miserable while it lasts. You may develop small red papules on your arms, hands, or wherever you’ve had close contact with the infested cat. If you notice this pattern and your cat has suspicious skin lesions, mention both to your doctor and your vet. Treating the cat resolves the problem for both of you. In rare cases where human symptoms persist after the cat is treated, a physician may prescribe a topical scabicide to speed things along, but this is unusual with feline-origin mites.
Behavioral Changes in Affected Cats
Mange doesn’t just affect the skin. Research into behavioral changes associated with mange in cats and dogs has found that infested animals can develop fear, restlessness, aggression, and loss of appetite alongside the expected scratching. These behavioral shifts can strain the relationship between a pet and its owner, particularly when an otherwise friendly cat starts growling, hiding, or swatting when touched.
16Kocatepe Veterinary Journal. KEDÄ° ve KÖPEKLERDE UYUZA NEDEN OLAN ÜÇ FARKLI ETKENÄ°N CÄ°NSÄ°YET, YAÅž ve BAZI DAVRANIÅž DEĞİŞİKLÄ°KLERÄ° ile Ä°LÄ°ÅžKÄ°SÄ°NÄ°N ARAÅžTIRILMASIThis makes intuitive sense. If your skin felt like it was crawling and burning, you’d be irritable too. The behavioral problems typically resolve alongside the skin disease once effective treatment is underway, but owners should be aware that a cat with mange may not want to be handled normally. Forcing contact can increase stress and may worsen self-trauma from scratching. Providing a quiet, warm space and minimizing unnecessary handling during the acute phase helps the cat cope while the medication does its work.
Conditions That Mimic Mange
Several other skin conditions in cats can look confusingly similar to scabies, which is one reason a proper diagnosis matters. Ear mites (Otodectes cynotis) live in the ear canal rather than burrowing into skin, but heavy infestations can cause crusting around the ears that resembles early notoedric mange. Dermatophytosis, the fungal infection commonly known as ringworm, produces patchy hair loss and crusty skin that can overlap visually with mange. Demodex mites, which are a separate group of burrowing mites, cause demodicosis in cats, and their lesions can also be difficult to distinguish from scabies without a skin scraping.
17Companion Animal. Burrowing mites in companion animalsAllergic dermatitis, whether from flea bites, food, or environmental allergens, is probably the most common condition that gets confused with mange in practice. Cats with allergies can develop intense itching, crusty skin around the head and neck, and hair loss that looks remarkably like notoedric mange at first glance. The distinction usually comes down to the skin scraping: if mites are present, it’s mange; if not, allergies or another cause is more likely. Even then, the two conditions can coexist, so a negative scraping in a cat already being treated for allergies doesn’t completely rule mange out if the clinical picture is suspicious and the cat isn’t improving with allergy management alone.
Outdoor Cats and Wildlife Reservoirs
Indoor-only cats rarely develop scabies unless they live with an infested dog or have recently been in a shelter or boarding facility where the mites were circulating. Most feline mange cases involve cats with outdoor access, and the route of exposure frequently traces back to wildlife. Foxes in particular are major carriers of Sarcoptes scabiei in many regions, and cats that share territory with foxes, even just passing through the same yards or resting under the same decks, can pick up mites from contaminated environments. The mites can survive off a host for a limited period, so direct animal-to-animal contact isn’t strictly necessary.
For Notoedres cati, wild felids serve as the reservoir. Bobcat populations in parts of North America have experienced notoedric mange outbreaks that raise concerns about both conservation and domestic cat exposure.
18PubMed. Notoedric mange in the bobcat, Felis rufus, from south TexasCats living in rural or semi-rural areas where wild felids roam are at higher risk. If you notice a mangy-looking wild animal frequenting your property, keeping your cat indoors until the animal moves on or is dealt with by wildlife authorities is a reasonable precaution.
Shelters and rescue organizations face a particular challenge with mange because newly admitted stray cats may bring mites in with them. A single infested cat in a crowded shelter can expose dozens of others before signs become obvious. Quarantine protocols for new arrivals and prompt veterinary examination of any cat showing skin lesions are the standard line of defense. For anyone adopting a new cat from a shelter, watching for skin changes during the first few weeks at home is a sensible habit, and not only for mange but for any condition that may have been incubating on arrival.