Demodectic Mange (Canine Skin Disease)

Demodectic mange, commonly just called mange, is a condition of the skin of dogs. It’s caused by mites called ‘Demodex Canis’, which live in the hair follicles. Infestation of the mites causes skin inflammation and hair loss. The mites are extremely contagious and can be transferred to humans as well as other animals.



The diagnosis is confirmed by the finding of mites upon deep skin scraping under a microscope.

Clinical symptoms

Localised demodicosis

This occurs mainly in young dogs 3-12 months of age. It causes mild inflammation and hair loss (often on the face head or extremities). These cases will generally heal spontaneously, but may progress to generalised demodicosis.

Generalised demodicosis

This covers large areas of the body and is made worse by secondary bacterial infection. If this form occurs in adult dogs, generally over 5 years of age, it can indicate an underlying disease.



This is often used for localised demodicosis. This is a full body rinse applied after shampooing and is left on the skin to dry.

Advocate (Moxidectin and Imidacloprid)

This medication is a top-spot liquid applied to the neck once monthly.

Dectomax injection

An injection given once a week for four to eight weeks .


It is very important to have regular vet checkups throughout the treatment, either fortnightly or monthly. Your dog must have two negative skin scrapings taken at least one month apart before treatment can cease. Your local Greencross Vets will support you and your pet throughout the process, so if you have concerns about your pet’s progression, contact us.

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