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SAMS 2 exam 3 wound and skin stuff > Parasitic causes of derm issues > Flashcards

Parasitic causes of derm issues Flashcards

1
Q

Know what orgs under microscope look like**

A
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2
Q

What are the types of demodex in cats (2)?

A

Demdex cati and demodex gatoi

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3
Q

What is the only common demodex?

A

Demodex canis

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4
Q

Localized vs generalized demodex in dogs:**

A

localized- mild, nonpruritic patchy alopecia, comedones, mild inflammation on head, limbs, trunk
Generalized will have large coalescing areas of affected skin, on entire body and paws, moderate to severe erythema, pruritis, papules, pigment, pedal demodicosis, secondary bacterial pyoderma

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5
Q

How can we tx mange in dogs?

A

Localized- 1% rotenone, Benzoyl peroxide, NO STEROIDS

Generalized- miticide, underlying disorders, abx, spay, clip hair, benzoyl peroxide, Amitraz dip, Isoxazolines

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6
Q

Pathogenesis of how demodex causes pathogenesis?

A

Overgrowth of mites causes disease
- young dogs will cell mediated immune def or genetic component predisposed
older dogs with immunocomp from disease or immunosuppressed in older animals

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7
Q

juvenile onset of demodex has ____ _____

A

spontaneous resolution

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8
Q

demodex lesions over the dog’s body:

A

Head, limbs, trunk

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9
Q

CS of dogs with Generalized demodex

A

large coalescing areas of affected skin, moderate to severe erythema, pruritus, papules, pigment changes. Pedal demodicosis, secondary bacterial pyoderma

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10
Q

How can we diagnose demodex in dogs and cats?

A

DEEP skin scrape with blood and mineral oil, dull blade
pluck hairs for trichogram
skin biopsy is not common and is last resort

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11
Q

What is a great tx that works early on with demodex?

A

Fluralaner (Bravecto)

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12
Q

Cat tx of demodex:

A

no approved products, lime sulfur dip, Amitraz rinses, topical moxidectin/imidacloprid (advantage multi), Bravecto

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13
Q

When is p considered cured from the demodex after treatment?

A

Tx for 30 days after the second negative skin scrape

Considered cured only after last neg deep skin scrape 1 year later

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14
Q

Dogs with generalized demodicosis and their parents should not be bred. T/F.

A

True!!!

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15
Q

Is demodex canis zoonotic?

A

No, only Demodex gatoi is

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16
Q

A newly adopted puppy has a small area of mild, non pruritic patchy alopecia but otherwise n= what do you tell the owner?

A

tell owner it’s a localized case and will resolve on its own

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17
Q

Is scabies zoonotic??

A

Yes!!

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18
Q

itchy and burrow into the skin, very itchy with long skinny legs and suction cups at end of legs=

A

scabies

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19
Q

“canine mange mite” aka “itch mite” aka ???? ???

A

Sarcoptes scabiei

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20
Q

Scabies is super common in what animal?

A

Dogs- very common

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21
Q

Scabies is very contagious through …

A

direct contact, its an immediate fomite

22
Q

Potential reservoirs for scabies:

A

Red fox and coyote

23
Q

Dogs lesion distribution with sarcoptes-

A

Ear margins, lateral elbows, lateral hocks, flanks and ventrum

24
Q

Pedal pinneal reflex=

A

sarcoptes sabeiei

25
Q

A dog comes in with seborrhea, hyperkeratosis, pruritic, self mutilation, what does it likely have??

A

Sarcoptes scabiei

26
Q

diagnosis of sarcoptes scabiei

A

Can be hard to find, can treat based on lesions, deep skin scrape with mineral oil, scrape needs to be full thickness epidermis with blood

27
Q

Without mites on skin scrape but CS and cocci and rods on slide, what do we do??

A

Give miticide to kill the sarcoptes

28
Q

Tx for sarcoptes scabiei

A

Revolution, Advantage multi- on label

Off label- Ivermectin, Oral isoxazolines

29
Q

What is the gold standard tx for sarcopes scabiei

A

Oral isoxazolines like nexguard and credelio

30
Q

What does sarcoptes cause in humans?

A

Rash, not horrible, self limiting because not a natural host so cannot reproduce

31
Q

Are ear mites contagious?

A

Yes!!

32
Q

Should you tx alllll household pets if one pet has ear mites?

A

yup.

33
Q

TX of otodectes cynotis (isk if i have to know this)

A

Selamectin (revolution), Moxidectin (Advantage multi), Ivermectin or Milbemite directly to ear

34
Q

are ear mites zoonotic?

A

Rarely, yes

35
Q

Pulicosis aka _____

A

fleas

36
Q

What is the most common ectoparasite in DOGS AND CATS??

A

Ctenocephalides felis (cat flea)

37
Q

Adult fleas survive __-__ months

A

2-3 months

38
Q

Are fleas zoonotic?

A

Yessss

39
Q

C. felis can transmit what zoonotic diseases???

A

Bartonella (cat scratch fever), Dypylidium caninum (tapeworms in kids), Acanthoceilonema reconditum, mycoplasma, Yersinia pestis

40
Q

Scabies have cups on arms but Cheyletiella have…

A

hooks at the end of arms

41
Q

Cheyletiella species are relatively uncommon, rare in cats and are ____ and ____

A

contagious and motile

42
Q

Cheyletiella aka ____ ____ mites clasp onto hair and are very superficial

A

Walking dandruff

43
Q

Cheyletiella is most common in what groups? How are the transmitted?

A

Puppies and breeding facilities; transmitted via contagious mobility of the mite via direct contact

44
Q

Is cheyetiella zoonotic?

A

Yes

45
Q

Is cheyetiella zoonotic?

A

Yes

46
Q

Mild, nonpruritic patchy alopecia, comedones, mild inflammation =

A

Localized demodex

47
Q

Juvenile onset =

A

Spontaneous resolution

48
Q

Tx of localized demodex:

A
  • 1% rotenone (Goodwinol ointment)
  • Benzoyl peroxide (Pyoben Gel®)
  • No steroids!
49
Q

Is demodex zoonotic?

A

No

50
Q

Is Demodex contagious?

A

Only D. gatoi

SAMS 2 exam 3 wound and skin stuff (12 decks)

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