Shared Flashcard Set

Details

Parasitic Dermatoses
Paterson
39
Veterinary Medicine
Professional
03/24/2012

Additional Veterinary Medicine Flashcards

 


 

Cards

Term
What is the proper term for dandruff?
Definition
Scaling
Term
Which species of Demodex can cause pruritic dz?
Definition
Demodex cornei
Term
Which Demodex species is short-bodied? Long-bodied?
Definition
Short: D. cornei
Long: D. injai
Term
Where does D. injai reside?
Definition
Pilosebaceous unit
Term
Where does D. cornei reside?
Definition
Stratum corneum
Term
Which species of Demodex causes dorsal seborrhea?
Definition
D. injai
Term
Which canine Demodex is related to the cat mite?
Definition
D. cornei
Term
Which resides more superficially, D. injai, or D. cornei?
Definition
D. cornei
Term
How is Demodex transmitted?
Definition
Vertically (bitch to pups w/i 1st few days of life during prolonged contact [nursing])
Term
Is Demodex horizontally contagious?
Definition
No
Term
What are Demodex mites normally controlled by?
Definition
T-cell mediated immunity
Term
According to the immunological theory, why does Demodicosis develop?
Definition
Ag-specific T-cell defect
Term
What predisposes Demodicosis?
Definition
Chronic corticosteroid Tx, Cushings, LSA, Hypothyroidism
Term
Where does D. canis reside?
Definition
Pilosebaceous unit
Term
In what form of Demodicosis is immunosuppression seen?
Definition
Pustular
Term
What are Demodex classifications based on? (4 factors)
Definition
Extent of lesions, Severity of generalized dz, Site specific, Age of dz onset
Term
What are lesion extent classifications of Demodex?
Definition
Localized, Generalized
Term
What are generalized dz severity classifications of Demodex?
Definition
Squamous v. Pustular
Term
What are site-specific classifications of Demodex?
Definition
Pododemodicosis; Ceruminous otitis
Term
What are onset age classifications of Demodex?
Definition
Juvenile, Adult-onset
Term
When is the onset of juvenile demodicosis?
Definition
3-18mo
Term
When is the onset of adult demodicosis?
Definition
>4y
Term
What is juvenile demodicosis likely due to?
Definition
Inherited Demodex-specific T-cell defect
Term
What is the Px for juvenile demodicosis?
Definition
High cure rate w/ appropriate mgmt
Term
What is the likely cause of adult demodicosis?
Definition
Underlying dz
Term
What is the Px of adult demodicosis?
Definition
More challenging to cure unless underlying dz is IDed & Tx
Term
What are CS of localized demodicosis?
Definition
Circular areas of alopecia, Mild scaling, Follicular plugging, +/- erythema
Term
What are the predilection sites of local demodicosis?
Definition
Forelimbs, Face (Periorbital, Commissure of mouth)
Term
What are CS of generalized demodicosis?
Definition
More extensive areas of alopecia, 2* bact inf common (pustules/folliculitis --> furunculosis +/- cellulitis +/- scale, erythema, hyperpigmentation)
Term
What is the gold standard Dx for demodicosis?
Definition
Deep skin scraping
Term
For how long should one scrape when performing a deep skin scrape?
Definition
Until capillary bleeding is achieved
Term
What magnification is used to examine a deep skin scrape?
Definition
10X
Term
What are other Dx modalities for demodicosis?
Definition
Hair plucking, Exam of lesion exudate, Bx
Term
Hair plucking has _____% sensitivity relative to DSS for demodicosis Dx.
Definition
85%
Term
When is Bx sometimes necessary to Dx demodicosis?
Definition
Pododemodicosis
Term
_____% of localized demodicosis cases will self-cure
Definition
90%
Term
Is acaricidal Tx typically needed to treat localized demodicosis?
Definition
No
Term
What is one possible topical Tx for localized demodicosis? What is the purpose?
Definition
Benzoyl peroxide shampoo; Follicular flushing
Term
What is the best FDA-approved Tx for generalized demodicosis?
Definition
Amitraz dip
Supporting users have an ad free experience!