Demodex Flashcards
Demodex life cycle
On animal wholes life
3-4 week life cycle
Demodex tranmisson
Transmitted from mother to puppies
What causes demodex
Abnormal proliferation
Pathogenesis of demodex
Deficient immune response
Genetics
Bacterial folliculitis
Zoonotic or contagious
No
Clinical signs
Papules/pustules
Alopecia
Scaling/crusting
Little blackheads (comidots-plugged hair follicles)
Relationship of demodex and bacteria
Both live in hair follicle
Staph can suppress immunity which causes demodex to proliferate
Deep skin scrape
Squeeze and scrape until some blood appears
Juvenile Localized
One area
Usually benign
Resolve on own
Generalized juvenile
Genetic
Don’t breed
What % will clear spontaneously
90%
Localized juvenile treatment
Benign neglect
Antibiotics
De worming, good diet,
Generalized demodex juvenile treatment
50% self clear
50% need ex
5% never clear
Spay/neuter
Cause of generalized adult onset demodex
Immunosuppression
Treatment of adult onset demodex
Miticide
Antibiotics
Benzoyl peroxide shampoo
Amitraz
FDA approved treatment
Clip hair short and bathe
Use once a week
Dont use amitraz with
Toy breeds
Sick old patients
Extensive ulceration
Side effects of amitraz
Sedation
Avoid with asthma and Diabeetus patients
Iverrmectin treatment
Build up dose slowly
Dont use in breeds with white feet
Moxidectin characteristics
Advantage multi
Weekly or every other week application
Use when you cant use ivermectin
Bravecto (flurolaner) characteristics
Highly effective
Safer than ivemectin
How to monitor demodex
Deep skin scrape 5 times -muzzle and 2 feet Record mite counts Rescrape same spot every 4 weeks Treat until 3 consecutive negative skin scrapes
Demodex cati
Similar to dog demodex
Long and skinny
Demodex gator
On surface
Contagious
Like sarcopties
Superficial skin scrape
Treatment for d. Cati
Ivermectin
Lymdyp
