Cheyletiellamange is a highly contagious skin disease that affects young
puppies. It is caused by large reddish mites that infest kennels and
pet shops. These mites live on the surface of the skin and die within 10 days
when off their host. Cheyletiella mange is becoming less prevalent because of
the widespread use of flea-control preparations that also kill cheyletiella
mites. Also, the mite tends to live in straw and animal bedding, which is not
used as frequently as it once was.
Cheyletiella mites are usually found along the back, but occasionally infest
other parts of the body. The signs are a red bumpy rash along with a large
amount of flaky skin in the hair coat. The condition is also called walking
dandruff because when you look at these skin flakes, you may see them moving.
The movement is actually caused by the mites moving around under the scales of
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Suspect this condition if you find heavy dandruff over the neck and back of
a recently acquired puppy or kitten. Itching may be intense or
The diagnosis is made by finding mites or eggs in dandruff scrapings
collected with a flea comb or sticky tape. In some cases the mites or eggs
cannot be seen, and the diagnosis depends on the animal’s response to
Cheyletiella mites can infect humans, producing an itchy papular rash (small
red pumps with areas of central necrosis) found most often on the arms, trunk,
and buttocks. This rash, like that of scabies, should disappear when the pet is
Treatment: All animals who have been in contact with the affected dog
must be treated to eliminate mites from the kennel and household. Pyrethrin
shampoos and 2 percent lime-sulfur dips (LymDyp) are effective in killing
cheyletiella mites. Follow the directions on the label. Treat weekly for six to
eight weeks. If the mites are resistant, seek veterinary consultation; other
treatments are available.
Clean and spray the dog’s quarters with a residual insecticide appropriate
for killing adult fleas. Repeat every two weeks during the treatment
WebMD Veterinary Reference from "Dog Owner's Home Veterinary Handbook"