(02-07) Parasitic Skin Diseases: Canine Demodicosis

Question 1

Caused by what three species of demodex mites?

Answer 1

demodex canis, demodox injai, and demodex cornei (latter 2 may just be diff life cycles o ffirst)

Question 2

demodex canis is a normal inhabitant of what?

Answer 2

canine hair follicles and sebaceous glands

Question 3

What two forms?

Answer 3

Juvenile-onset: localized or generalized; adult-onset localized or generalized

Question 4

90% of the juvenile-onset localized cases spontaneously resolve within what time?

Answer 4

6 - 8 weeks

Question 5

what % of the juvenile-onset generalized cases spontaneously resolve?

Answer 5

30 to 50%

Question 6

Most dogs with juvenile onset generalized demodicosis appear to have what?

Answer 6

hereditary genetic predisposition

Question 7

Do not breed dogs with the juvenile-onset generalized form

Answer 7

d

Question 8

Look for systemic diseases such as neoplasm, Cushing’s, hypothyroidism and
immunosuppression in dogs that develop demodicosis after when?

Answer 8

2 years of age (adult-onset)

Question 9

Always perform at least a CBC, chemistry profile and urinalysis in dogs with adult-onset
demodicosis.

Answer 9

d

Question 10

Treat demodicosis for how long?

Answer 10

30 days past 2 consecutive negative skin scrapings obtained at 4- to 8-
week intervals. (Continue to monitor the animal with skin scrapings over the following year before declaring cure!

Question 11

The adult-onset form has a guarded prognosis independent if the disease is localized or
generalized. - how about juvenile?

Answer 11

The adult-onset form has a guarded prognosis independent if the disease is localized or
generalized.

Question 12

If negative skin scrapings are never obtained, find an appropriate maintenance therapy

Answer 12

d