Mites

Question 1

Where do mites spend their entire life cycle?

Answer 1

The host

Question 2

What do mites produce?

Answer 2

Dermatologic conditions

Question 3

What is the infestation of mites called?

Answer 3

Acariasis

The condition of having mites

Question 4

What are the clinical signs of mites?

Answer 4

Pruritis
Alopecia
Erythema

Question 5

How do you diagnose a mite infestation?

Answer 5

Skin scraping

Cellophane tape test

Question 6

What are the characteristics of Sarcoptiform mites?

Answer 6

Round to Oval

Pedicels

Question 7

How do Pedicels help determine the species of mites?

Answer 7

By the length, joints, suckers, and location of anal openings

Question 8

What are the two families of Sarcoptiform mites?

Answer 8

Sarcoptidae

Psoroptidae

Question 9

Sarcoptidae mites

Answer 9

Burrowing mites

Question 10

Psoroptidae mites

Answer 10

Non-burrowing mites

Ear

Question 11

How are Sarcoptidae and Psoroptidae transmitted

Answer 11

By direct contact

Question 12

Sarcoptes scabei canis/felis/sues

Answer 12

Dependent on the host

Entire life cycle is 3 weeks

Question 13

How do you diagnose Sarcoptes scabei canis/felis/sues?

Answer 13

Skin scraping

Can be hard to find

Question 14

What does a Sarcoptes scabei canis/felis/sues cause?

Answer 14

Bacterial and yeast infections

Question 15

Does Sarcoptes scabei canis/felis/sues have zoonotic potential?

Answer 15

Little bit
Causes a red rash
Does not establish a full-blown infestation in people

Question 16

Psoroptidae mites

Answer 16

Non-burrowing mites

Question 17

Where do Psoropitdae mites live?

Answer 17

The surface of the skin and feed on the keratinized scale, hair, and tissue fluids

Question 18

Otodectes cynotis

Answer 18

Live in the external ear canal

Question 19

What are the hosts of Otodectes cynotis?

Answer 19

Cats, dogs, ferrets

Question 20

What does Otodectes cynotis cause?

Answer 20

Otitis externa

Question 21

Is Otodectes cynotis contagious?

Answer 21

Very

Spread by physical contact

Question 22

Is Otodectes cynotis zoonotic?

Answer 22

No

Question 23

Non-sarcopticform mites

Answer 23

Demodex spp

Cheyletiella spp

Question 24

Demodex spp Characteristics

Answer 24

The adult mites look like 8-legged alligators
Live deep in the hair follicles and sebaceous glands
Host-specific

Question 25

How is Demodex diagnosed?

Answer 25

Deep skin scrape

Question 26

What does it mean if Demodex spp is host-specific?

Answer 26

It is not transmissible from one species to another

Question 27

Is Demodex zoonotic?

Answer 27

No

Question 28

Cheyletiella spp

Answer 28

Walking dandruff | Mites look like large moving flakes of dandruff

Question 29

What are the hosts of Cheyletiella spp?

Answer 29

Dogs, Cats, Rabbits

Question 30

Cheyletiella characteristics

Answer 30

Can be seen with a naked eye | Lives in the keratin layer of the skin

Question 31

How is Cheyletiella diagnosed?

Answer 31

Cellophane tape test

Question 32

What is the term for too many mites?

Answer 32

Demodicosis

Question 33

What does a localized infection of mites look like?

Answer 33

Non-pruritic alopecia on the muzzle, face (especially around the eyes), and forelegs

Question 34

What does a generalized infection of mites look like?

Answer 34

``` Diffuse alopecia Secondary pruritic (itchy) bacterial infection ```

Question 35

What is a generalized mite infection caused by?

Answer 35

Immune deficiency Genetic predisposition Hormonal changes (particularly during estrus) Immunosuppressive disease or drugs

Question 36

When looking at a skin scraping under the microscope, what do you report to your veterinarian?

Answer 36

Life stages numbers live: dead ratio

Question 37

What is the treatment of all other species of mites besides Demodex?

Answer 37

Treat the bedding and other animals

Question 38

What is the treatment for Demodex spp?

Answer 38

``` Lime-sulfur and Amitraz dips Ivermectin orally Interceptor daily Promeris/Advantage Multi Goodwinol ointment ```

Question 39

What was considered the best off-label treatment for Demodex spp?

Answer 39

Ivermectin orally

Question 40

What species of dogs cannot have Ivermectin?

Answer 40

Collies because they have a Multi-drug resistant MDR-1 gene

Question 41

What type of treatment costs a lot of money?

Answer 41

Interceptor daily

Question 42

What is the Demodex treatment for cats?

Answer 42

Selamectin (Revolution)

Question 43

What is used to treat generalized Demodex spp today?

Answer 43

Fluralaner Bravecto Nexgard "aner" group of drugs