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What lesions of pruritus uniquely occur in cats? (3)
non-inflammatory symmetric alopecia, miliary dermatitis, eosinophilic granuloma complex
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What lesions of pruritus are common in dogs but relatively uncommon in cats? (3)
excoriations, lichenification, hyperpigmentation
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Feline cutaneous reaction patterns of pruritus. (4)
feline symmeteric alopecia, miliary dermatitis, eosinophilic granuloma complex, head and neck pruritus
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What is the first step to evaluating feline symmetric alopecia?
trichogram [pluck hairs and look at root]: [blunted] self-induced--> pruritic (common), psychogenic (uncommon) VERSUS [pointed] non-self-induced
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Describe miliary dermatitis. (4)
papulocrustous (papules and crusts) cutaneous reaction pattern, secondary alopecia, erythema, excoriation
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What are the 3 components of eosinophilic granuloma complex?
indolent ulcer, collagenolytic granuloma, eosinophilic plaque
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Describe the indolent ulcer that occurs with eosinophilic granuloma complex. (5)
upper lip, well-circumscribed, disc-shaped, no pain or pruritus
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What are the 4 types of collagenolytic granuloma?
linear granuloma, pharyngeal granuloma, chin form, footpad
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3 general categories of pruritic feline dermatoses.
allergic, parasitic, infectious
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What allergies do cats get that cause pruritus? (3)
FAD, atopic dermatitis, CAFR
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What parasitic diseases of cats are pruritic? (4)
Notoedres (sarcoptic mange), Demodex gatoi, +/- Demodex cati, Cheyletiella
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What is the very first step of the treatment plan for a pruritic cat?
FLEA TREATMENT!!!!
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After the initial flea treatment, what should you do at the 4 week recheck?
- Good response--> Dx FAD
- Poor response--> if nonseasonal, initiate food trial; if seasonal, atopic dermatitis
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What should you do at the 8 and 12 week rechecks?
- Good response to food challenge--> rechallenge with original food--> if pruritus recurs, Dx CAFR
- Partial or poor response to food trial--> atopic dermatitis or atopic AND CAFR
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What are steroid options for control of pruritus in cats? (3)
prednisolone, dexamethasone, depo-medrol
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What non-steroidal medications can be given to cats to control pruritus?
Atopica- MINIMUM 4 week trial
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What must you be sure of before starting a cat on Atopica? (2)
FeLV/FIV negative, no history of cancer
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What are additional anti-pruritics for cats that are not as commonly used?
antihistamines, essential fatty acids, topical anti-pruritics (bathing and topicals are more difficult in cats than dogs; think about E collar until dried)
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How do you diagnose psychogenic self-induced alopecia?
always assume self-induced alopecia is pruritic in origin--> if you treat as FED, CAFR, and atopic and if still doesn't respond--> Dx psychogenic alopecia
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How can you handle psychogenic alopecia in cats? (3)
behavioral modification, drug therapy, refer to veterinary behaviorist
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You do a trichogram, there is no barbering of hair; the ends of hairs are pointed...what do you do?
Non-self-induced alopecia (very rare): endocrine, paraneoplastic
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What are endocrine causes of non-self-induced alopecia? (3)
hyperthyroidism, DM, hyperadrenocorticism
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What paraneoplastic disorders cause non-self-induced alopecia in cats?
- feline paraneoplastic alopecia: pancreatic adenocarcinoma, biliary carcinoma
- feline thymoma-associated exfoliation dermatitis
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