Term
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Definition
Sarcoptes scabiei var canis
most pruritic dermatosis in dogs
foxed are reservoir contagious between dogs
transient infection on cats and humans |
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Term
| Canine Scabies Life Cycle |
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Definition
17-21 dys
adult mites feed and copulate on skin surface
gravid female burrows through stratum corneum to lay eggs
larvae hatch from eggs and migrate to surface where they mature first into nymph then adult
entire life cycle is on the host
can survive off host for 2-6 days at room temperature |
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Term
| Canine Scabies Pathogenesis |
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Definition
lag phase after exposure
mild pruritis several days after infection leads to intense pruritis by 21-30 days
takes some time for hypersensitivity to start
as few as 3-4 mites can maintain signs
variable severity |
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Term
|
Definition
predilection for sparsely haired areas like ears, elbows, hocks
ventrally distributed disease
intense severe pruritis
initial primary lesion is an erythematous papule with white/yellow crust
chronicity and self-excoriation leads to alopecia, thickened skin, extensive crusting |
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Term
|
Definition
other animals and owners affected
poor response to steroids
more common in outdoor dogs
see mites/eggs in fecal exam
negative scrape does not rule it out
superficial scraping
ideally scrape non-excoriated papule
common not to find mites
diagnosis based on response to treatment |
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Term
| Canine Scabies External Treatment |
|
Definition
treat all in contact animals
environmental management
clip before using dipping
treat for 2 life cycles (6 weeks)
lime sulfur dips
Frontline spray helps
Pramite, amiraz
selamectin (revolution) is FDA approved for sarcoptes (2 applications) |
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Term
| Canine Scabies Internal Treatment |
|
Definition
ivermectin
milbemycin (interceptor)
moxidectin (advangage multi) |
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Term
|
Definition
notodectres cati
transient infestation of other animals
highly contagious
rare but easily found on skin |
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Term
|
Definition
intense pruritis
medial pinna, upper ear, face, eyelids, neck, feet, perineum
erythematous papules with thick folded skin and yellow crusts
excoriation |
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Term
|
Definition
positive skin scrape is diagnostic
should easily find mites |
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Term
| Feline Scabies Topical Treatment |
|
Definition
clip hir
keratolytic shampoo
lime sulfur dip
amitraz |
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Term
| Feline Scabies Systemic Treatment |
|
Definition
ivermecting
selamectin (revolution)
treat all animals
concurrent steroids to manage pruritis |
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Term
|
Definition
large suface swelling mite
highly contagious and zoonotic |
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Term
|
Definition
nonburrowing mite
lives on skin surface and occasionally pierces skin to feed
entire life cycle on one host
females survive off host for 10 days |
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Term
|
Definition
dorsal distribution
scales
variable pruritis
exfoliated erythema
miliary dermatitis in cats |
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Term
|
Definition
visualization of parasite or eggs
walking dandruff
superficial skin scrape
acetate tape preparation
fecal float, flea combing, vaccuum |
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Term
|
Definition
treat all in contact animals
treat environment
keratolytic shampooo
lime sulfur
fipronyl, selamectin, avermectins, amitraz |
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Term
|
Definition
otodectes cynotis
highly contagious in young animals
not species specific
complete 3 week life-cycle on single host
migrate all over the body |
|
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Term
|
Definition
visualization of mites
mineral oil prep of debris
Diff Quick prep of debris
response to therapy |
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Term
| Ear Mites Topical Treatment |
|
Definition
treat all in contact animals
ear cleaner
topical or systemic parasiticide
Tresaderm, baby oil, ivermecting, mibemycin otic |
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Term
| Ear Mites Systemic Treatment |
|
Definition
recommended because they can migrate out of ear
selamectin
ivermecting
advantage multi |
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Term
|
Definition
Pelodera strongyloides
small saprophytic nematode that lives in decaying organic matter
can invade mammalian skin |
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Term
|
Definition
| on areas where contact with organic material like stra |
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Term
|
Definition
| nematodes invade hair follicles |
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Term
|
Definition
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Term
|
Definition
treat secondary pyoderma
remove and replace bedding
lime sulfur dip
steroids to relieve itching |
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Term
|
Definition
adults live on decaying plant material
larvae are parasitic on animals
most common in late summer and fall |
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Term
|
Definition
papules and prurutis
feet, legs, ventral abdomen
fipronil spray helps prevent reinfestation
steroids relieve itching |
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