Parasitic, Viral, and Protozoal Skin Diseases

Question 1

what causes scabies?

Answer 1

Sarcoptes scabei

Question 2

what are skin lesions like with canine generalized demodicosis?

Answer 2

severe generalized

Question 3

what leads to the juvenile form of canine generalized demodicosis?

Answer 3

genetic defect leading to defective control of Demodex populations

Question 4

what do papillomaviruses in dogs and cats target?

Answer 4

squamous epithelia

Question 5

what are the common manifestations of papillomavirus in dogs?

Answer 5

oral papilloma
exophytic cutaneous papilloma
cutaneous inverted papilloma
pigmented viral plaque

Question 6

what causes exophytic cutaneous papilloma?

Answer 6

canine papillomavirus 1, 2, 6, 7

Question 7

what is the most common cause of feline viral plaques?

Answer 7

FcaPV2

Question 8

which cats are predisposed to feline viral plaques?

Answer 8

sphinx
devon rex

Question 9

what lesions are seen with scabies?

Answer 9

erythema
paules
itch
scaling
crusts

Question 10

how long does canine scabies survive at room temperature off of the dog?

Answer 10

2-6 days

Question 11

what do the adults do in scabies?

Answer 11

burrow tunnels in epidermis
release proteases and other enzymes

Question 12

how does canine scabies respond to glucocorticoids?

Answer 12

non-responsive
poorly
temporarily

Question 13

how common is a false negative with pinnal-pedal reflex for canine scabies?

Answer 13

20%

Question 14

what can be used in a therapeutic trial to diagnose canine scabies?

Answer 14

selamectin
oral isoxazoline

Question 15

how sensitive and specific is serology for canine scabies?

Answer 15

80-95% sensitive
75-100% specific

Question 16

what are the FDA approved treatments for canine scabies?

Answer 16

selamectin/revolution
moxidectin/advantage multi
sarolaner/simparica

Question 17

are demodex mites commensal?

Answer 17

yes- all mammals
Demodex gatoi is not- contagious

Question 18

what is demodicosis?

Answer 18

inflammatory skin disease consequence of overgrowth of demodex mites

Question 19

in whom is demodicosis seen?

Answer 19

common in dogs
others: immunosuppressed

Question 20

what Demodex species impact dogs?

Answer 20

D. canis
D. injai
D. cornei

Question 21

is pruritus seen with canine localized demodicosis?

Answer 21

no

Question 22

what leads to the adult form of canine generalized demodicosis?

Answer 22

immunosuppression

Question 23

what is pruritus like in canine generalized demodicosis?

Answer 23

low to moderate: when secondary infection present

Question 24

how can you diagnose demodicosis?

Answer 24

history, exam
examine plucked hairs
deep skin scrapings
cytology to detect bacterial infection
occasional: biopsy

Question 25

how can you treat canine generalized demodicosis?

Answer 25

isoxazolines ivermectin topical moxidectin topical amitraz

Question 26

where do papillomaviruses target?

Answer 26

squamous epithelia

Question 27

how are papillomaviruses transmitted?

Answer 27

direct contact

Question 28

what are koilocytes?

Answer 28

shrunk nuclei, peripheral halo, intracytoplasmic vesicles seen on histopathology with papillomaviruses

Question 29

is each syndrome of papillomaviruses associated with a distinct papillomavirus species?

Answer 29

yes

Question 30

what are the common manifestations of papillomavirus in cats?

Answer 30

viral plaque and bowenoid in situ carcinoma cutaneous/oral squamous cell carcinoma feline sarcoid

Question 31

where are lesions seen with exophytic cutaneous papilloma?

Answer 31

face ears extremities

Question 32

what is cutaneous inverted papilloma like?

Answer 32

small pore, cup-shaped growth downward abdomen spontaneous regression common

Question 33

should you use immunosuppression for canine papilloma?

Answer 33

no

Question 34

who is canine viral plaque common in?

Answer 34

pugs immunosuppression

Question 35

is UV exposure the primary cause of feline viral plaques?

Answer 35

no: lesions in haired and non-haired skin

Question 36

what are the proliferating cells in feline sarcoid?

Answer 36

mesenchymal not epidermal

Question 37

what causes feline sarcoid?

Answer 37

BPV-14 cross-species infection- bovines

Question 38

where are lesions in feline herpes virus?

Answer 38

face usually elsewhere reported non-symmetrical

Question 39

how can feline herpesvirus dermatitis be diagnosed?

Answer 39

histology immunohistochemistry PCR

Question 40

what is the most relevant leishmaniosis in canine and feline?

Answer 40

L. infantum

Question 41

how is leishmaniosis transmitted?

Answer 41

sand flies others maybe

Question 42

what is Th1 associated with in leishmaniosis?

Answer 42

protective response subclinical

Question 43

what orthopedic signs are seen with leishmaniosis?

Answer 43

arthritis lameness myositis ossteomyelitis

Question 44

what skin lesions are seen with leishmaniosis?

Answer 44

onychogryphosis exfoliative dermatitis erosions/ulcerations nodular/papular/pustular