Cheyletiella

{{Automatic taxobox

| image = Cheyletiella 22.jpg

| image_alt = "Cheyletiella yasguri" (?) from a dog

| image_caption = Cheyletiella yasguri (?) from a dog

| taxon = Cheyletiella

| authority = G. Canestrini, 1886

| synonyms =

Ewingella
Bicheyletiella

| synonyms_ref =

| type_species =

| subdivision_ranks = Species

| subdivision_ref = IRMNG (2018). Cheyletiella Canestrini, 1885. Accessed at: http://www.irmng.org/aphia.php?p=taxdetails&id=1197277 on 2019-01-14

| subdivision =

Cheyletiella blakei Smiley, 1970
Cheyletiella curvidens Lawrence, 1948
Cheyletiella ochotonae Volgin, 1960
Cheyletiella parasitivorax (Mégnin, 1877)
Cheyletiella romerolagi (Fain, 1972)
Cheyletiella strandtmanni Smiley, 1970
Cheyletiella yasguri Smiley, 1965

}}

Cheyletiella is a genus of mites that live on the skin surface of dogs,{{cite journal |vauthors=Paradis M, Villeneuve A |title=Efficacy of Ivermectin against Cheyletiella yasguri Infestation in Dogs |journal=Can. Vet. J. |volume=29 |issue=8 |pages=633–635 |date=August 1988 |pmid=17423097 |pmc=1680781 }} cats,{{cite journal |vauthors=Scott DW, Paradis M |title=A survey of canine and feline skin disorders seen in a university practice: Small Animal Clinic, University of Montréal, Saint-Hyacinthe, Québec (1987-1988) |journal=Can. Vet. J. |volume=31 |issue=12 |pages=830–835 |date=December 1990 |pmid=17423707 |pmc=1480900 }} and rabbits.{{cite journal |vauthors=Mellgren M, Bergvall K |title=Treatment of rabbit cheyletiellosis with selamectin or ivermectin: a retrospective case study |journal=Acta Vet. Scand. |volume=50 |pages=1 |year=2008 |issue=1 |pmid=18171479 |pmc=2235873 |doi=10.1186/1751-0147-50-1 |doi-access=free }}

The adult mites are about 0.385 millimeters long, have eight legs with combs instead of claws, and have palpi that end in prominent hooks.{{cite web | last = Mueller | first = Ralf S. | title = Superficial mites in small animal dermatology | work = Proceedings of the 50° Congresso Nazionale Multisala SCIVAC | year = 2005 | url = http://www.ivis.org/proceedings/scivac/2005/Mueller4_en.pdf?LA=1 | format = PDF | access-date = 2007-02-25 }} They do not burrow into the skin, but live in the keratin level. Their entire 21-day life cycle is on one host. They cannot survive off the host for more than 10 days.{{cite book|last=Griffin|first=Craig E.|author2=Miller, William H. |author3=Scott, Danny W. |year=2001|title=Small Animal Dermatology|edition=6th|publisher=W.B. Saunders Company|isbn=978-0-7216-7618-0}}

Cheyletiellosis

Cheyletiellosis (also known as Cheyletiella dermatitis),"Freedberg, et al. (2003). Fitzpatrick's Dermatology in General Medicine. (6th ed.). McGraw-Hill. {{ISBN|0-07-138076-0}}. is a mild dermatitis caused by mites of the genus Cheyletiella. It is also known as walking dandruff due to skin scales being carried by the mites.

Cheyletiellosis is seen more commonly in areas where fleas are less prevalent, because of the decreased use of flea products that are also efficacious for the treatment of this mite.{{Cite web|title=Diagnosing and treating cheyletiellosis|url=https://veterinary-practice.com/article/diagnosing-and-treating-cheyletiellosis|access-date=2021-01-06|website=veterinary-practice.com|date=5 May 2018 |language=en}}

Cheyletiellosis is highly contagious. Transmission is by direct contact with an affected animal.

=Presentation=

Symptoms in animals vary from no signs to intense itching, scales on the skin, and hair loss. The lesions are usually on the back of the animal. Symptoms in humans include multiple red, itchy bumps on the arms, trunk, and buttocks. Because humans are not a host for the mite, the symptoms usually go away in about three weeks. Though the medical community does not consider a human mite infestation a legitimate diagnosis, it will treat the symptoms if necessary.

=Diagnosis=

Diagnosis is by finding the mites or eggs microscopically in a skin scraping, combing, or on acetate tape applied to the skin.

=Treatment=

The most common treatment in animals is weekly use of some form of topical pesticide appropriate for the affected animal, often an antiflea product. Fipronil works well, especially in cats.{{cite journal |vauthors=Scarampella F, Pollmeier M, Visser M, Boeckh A, Jeannin P |title=Efficacy of fipronil in the treatment of feline cheyletiellosis |journal=Vet Parasitol |volume=129 |issue=3–4 |pages=333–9 |year=2005 |pmid=15845289 |doi=10.1016/j.vetpar.2005.02.008}} Cats can also be treated with a lime sulfur insecticide dip or a shampoo with non-pyrethrin insecticide for two weeks beyond the conclusion of symptoms.{{Cite book|title=Cat Owner's Home Veterinary Handbook|last=Eldredge|first=Debra M.|publisher=Howell Book House|year=2008|pages=142}}

In unresponsive cases, ivermectin is used. Selamectin is also recommended for treatment.{{cite web | last = Ihrke | first = Peter J. | title = New Approaches to Common Canine Ectoparasites | work = Proceedings of the 31st World Congress of the World Small Animal Veterinary Association | year = 2006 | format = PDF | url = http://www.ivis.org/proceedings/wsava/2006/lecture6/Ihrke2.pdf?LA=1 | access-date = 2007-02-25 }} None of these products are approved for treatment of cheyletiellosis.{{cite web | title = Mange in Dogs and Cats | work = The Merck Veterinary Manual | year = 2006 | url = http://www.merckvetmanual.com/mvm/index.jsp?cfile=htm/bc/72005.htm | access-date = 2007-02-25 }} Other pets in the same household should also be treated, and the house or kennel must be treated with an environmental flea spray.{{cite journal | last = Jeromin | first = Alice | title = Cheyletiella: The under-diagnosed mite | journal = DVM | pages = 8S–9S |date=August 2006 }}