Term
What is the pathogenesis of FAD (flee allergy dermatitis) |
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Definition
- Injection of salivary proteins (haptens)
- Combination of hapten with collagen to form antigen
- Hypersensitivity insues |
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Term
What type of hypersensitivity occurs with FAD? |
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Definition
Type I
Type IV
Cutaneous basophilic hypersensitivity
Late phase reacion |
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Term
Where anatomically are the physical findings noted? |
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Definition
Dogs: dorsal lumbar area, caudal aspect of rear legs, ventrum
Cats: similar or reaction patterns (miliary dermatitis or eosinophilic dermatitis) |
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Term
How long should an animal be treated for FAD with glucocorticoid? |
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Definition
Treat for 3-4 weeks to allow flea control to establish |
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Term
What type of hypersensitivity is a food allergy? |
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Definition
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Term
What are some differential diagnoses for adverse food reactions excluding hypersensitivities? |
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Definition
1) Food intolerance (dif b/c they can occur on first exposure)
2) Idiosyncratic adverse reactions
3) Pharmacologic reaction
4) Food poisoning |
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Term
What are common food allergens for dogs and cats? |
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Definition
Beef, dairy products, poultry products, corn, soy.
Dogs: wheat
Cats: FISH |
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Term
True or false: Food allergies are typically noted when there is a dietary change |
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Definition
False, most typically associated with a diet the animal has been on for weeks or months |
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Term
What physical findings would you expect in a dog food allergy? |
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Definition
Face rubbing, foot licking and generalized pruritis
Otitis externa
Recurrent superficial pyoderma or folliculitis
Interdigital pyoderma |
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Term
Physical findings for cat |
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Definition
Facial dermatitis
Otitis externa
Miliary dermatitis
Eosinophilic dermatitis
Self induced alopecia |
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Term
What should you base diagnosis on? |
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Definition
- Clinical features
- Hypoallergenic diet (8-12weeks animal should get 50%) |
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