These mites (Demodex canis) thrive only on their specific hosts (dogs). The transmission of these mites from mother to pup is normal. But some dogs develop an overgrowth of these mites, a condition called demodicosis, or demodectic mange. WHAT YOU MAY NOTE. Signs of demodicosis can. Abstract. Demodicosis is a common canine ectoparasitosis. Recognising the clinical presentation, identifying the parasite and choosing the most appropriate.

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These patches often occur around the face, head and feet and are not typically itchy Figure 1. It is applied weekly or biweekly, for several weeks, until no mites can be detected by skin scrapings. The prognosis for adult onset generalised demodicosis is far more uncertain, as many of these dogs have an underlying systemic illness. Ivermectin is used most frequently; collie -like herding breeds often do not tolerate this drug due to a defect in the blood—brain barrierthough not all of them have this defect.

Save and Preview PDF. In breeds such as the West Highland White Terrierrelatively minor skin irritation which would otherwise be considered allergy should be carefully scraped because of the predilection of these dogs to demodectic mange.

Your login session has timed out. Common triggers for adult onset demodicosis include hormonal diseases and cancer. Acetate tape impression with squeezing eemodicosis recently found to be a more sensitive method to identify mites.

The biopsy may be necessary in patients with thick skin e.

A healthy environment, good diet, and regular veterinary checkups will help your dog be in the best possible health! Treatment of canine demodicosis can be challenging, and therapeutic options depend on many factors, including type of demodicosis localized or generalized, juvenile or adult onsetpatient history and breed, underlying causes, and client considerations. Adult-onset demodicosis is usually demodicosie in adult dogs aged 4 years or older.


The prognosis for localised disease in young dogs is very good, and most recover uneventfully from the disease. The treatment for demodicosis will vary depending on whether the infection is localized or generalized. Cat Owner’s Veterinary Handbook. Demodicosis is seen most often in purebred dogs 1,2 and puppies and young dogs up to 18 months of age.

There are two presentations of demodicosis depending on the age at demodicosiis it develops. Pododemodicosis is especially difficult to cure and carries a poor prognosis. Because of potential adverse effects on the central nervous system, this therapy should not be used in ivermectin-sensitive breeds i. Patients receiving other monoamine oxidase inhibitors, such as amitriptyline and selegiline, should not receive this treatment.

Demodex is a genus of mite in the family Demodicidae. Views Read Edit View history. Relapses can occur within this time frame, so owners need to observe their dogs carefully for evidence of disease. Dogs with demodicosis show a decrease in plasma copper and zinc levels due to the dpgs demand for antioxidant activity.

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Ideally, for each scraping site, the number of mites or at least an estimated percentage, including dead and living mites in each life stage should be recorded in the patient’s medical record BOX 1. Articles needing additional references from May All articles needing additional references Infobox medical condition Commons category link is locally defined. If treatment is deemed necessary Goodwinol, a rotenone -based insecticide ointment is often prescribed, but it can be irritating to the skin.

It is thought that Demodex mites can only be passed between dogs in the first few days of life from the mother to the pup. Scraping should be deep enough to produce capillary bleeding while squeezing the area being scraped; this forces mites deep in the hair follicle to the surface. These cases should be demoducosis monitored if no treatment is given.


Bathing with a benzoyl peroxide shampoo before dipping may be dogx for its keratolytic effect and follicular flushing activity. Dermanyssus gallinae gamasoidosis Liponyssoides sanguineus rickettsialpox.

Demodicosis – Wikipedia

Demodex mites are host-adapted; there is no zoonotic potential in either canine or feline demodicosis. Demodicosis can usually be diagnosed relatively easily. Although milbemycin oxime Interceptor, Novartis Animal Health can be expensive for treating large-breed dogs, it may improve client compliance through its ease of administration i.

All in one place. You will notice thinning hair, scaly skin, and the skin itself will appear reddish-brown and look very itchy. Microscopically, fusiform eggs, six-legged larvae, eight-legged nymphs, or eight-legged adult mites dead or alive can be seen FIGURE 3. Generalised cases dogx young dogs and those in adult dogs require intensive treatment.

With generalized demodicosis, skin lesions are more widespread and may involve the entire body. Ideally, the percentage of dead adult mites should be higher than the percentage of live adult mites. This defect may or may not resolve as the puppy ages.

This site is optimised for modern web browsers, and does not fully support your browser version, we suggest the use of one of the following browsers: Owners of intact dogs with generalized demodicosis should be advised to spay or neuter their dogs 1 because of the hereditary predisposition to develop the disease and 2 to eliminate the stress of estrus, which can exacerbate the disease.

Alternatively, plasma levels of zinc and copper have been seen to be decreased in dogs suffering with demodicosis.