Unit 2: Feline Dermatitis Flashcards
What are the most common reasons for pruritus in cats?
Fleas, parasite hypersensitivity, cutaneous adverse food reaction, dermatophytosis, “catopy”
What is the #1 reason for itchy cats?
Fleas (C. felis)
What parasites contribute to hypersensitivity in cats?
O. cynotis, C. blakei, N. cati, D. gatoi, mosquitoes
What dermatophyte affects cats?
M. canis
T/F: It is more common to see food allergies in cats than in dogs.
True
What is “catopy”?
Non-flea, non-food hypersensitivity dermatitis (NFNFHD)
What is the presentation of an allergic cat?
Excessive grooming, eosinophilic skin lesions, miliary dermatitis, head and neck pruritus, recurrent otitis
What is the most over-diagnosed cause for cats excessively grooming?
psychogenic alopecia
What type of diagnosis is psychogenic alopecia?
diagnosis of exclusion
How can you R/O psychogenic alopecia?
Put cat on pred - if there is response to steroid, there is inflammation present and this eliminates psychogenic alopecia as a DDx
What do eosinophilic skin lesions look like?
Can be indolent ulcers, can be plaques that are raised and look like ulcers
What will you see on cytology with eosinophilic skin lesions?
Numerous eosinophils
What 2 components are required for addressing eosinophilic lesions?
Inflammation and infections
What can be used with inflammation due to eosinophilic lesions?
Prednisolone
What antibiotics can be used with eosinophilic lesions?
Clavamox, cefpodoxime, cefovecin
What is miliary dermatitis?
Bacterial skin infection of cats
What is important to ask the owner when we think the cat is allergic?
If there are other animals in the house, if they are affected, and when the last cat was added
What should we think of if we see multiple cats with the same lesions around the same time?
parasites
What are initial diagnostics to do for cat allergy and which 2 are most important?
Flea comb, fecal float, skin scrape, cytology, fungal PCR/DTM culture
Why should a fecal be done when allergy is involved?
It is common to find organisms in the feces because cats groom so much
Why should we do a fungal PCR/DTM culture with allergy?
It is stardard of care to eliminate ringworm as a DDx because it is so common in cats
What steps are important when dealing with fleas?
Kill fleas on pet, address the environment, treat all pets, prevention, ensure resolution prior to moving on
What is the most contagious form of demodicosis?
D. gatoi
What is the single most effective treatment for D. gatoi?
Lime sulfur rinse - weekly for 6-8 weeks
What are other, less evidential forms of treatment for D. gatoi?
Ivermectin, Advantage Multi, Bravecto, Revolution Plus
What is used to treat pruritus in D. gatoi cases?
Short course of steroids - methylpred or prednisolone
What is this?
Cheyletiella
What is this and how do you know?
Otodectes, has suction cups on end
What are common treatments for ectoparasites? (other than D. gatoi)
Revolution (plus), Adv Multi, Bravecto, Macrocyclic lactones (ivermectin, doramectin); also can use lime sulfur
Mosquito bite hypersensitivity is a _____ disease.
seasonal
Where do lesions occur for mosquito bite hypersensitivity?
Bridge of nose, pinnae, and pads
How is mosquito bite hypersensitivity diagnosed?
Clinical findings and response to mosquito-free environment