Veterinary Medicine Notes > University Of Veterinary Medicine And Pharmacy Of Kosice, Slovakia Veterinary Medicine Notes > Small Animal Internal Disease - Skin Notes
Atopy Flea Allergy Food Allergy Notes
This is a sample of our (approximately) 8 page long Atopy Flea Allergy Food Allergy notes, which we sell as part of the Small Animal Internal Disease - Skin Notes collection, a A (> 90% ) package written at University Of Veterinary Medicine And Pharmacy Of Kosice, Slovakia in 2013 that contains (approximately) 40 pages of notes across 7 different documents.
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Atopy Flea Allergy Food Allergy Revision
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4. Atopy, Flea Allergy, Food Allergy ATOPY :
= Canine atopic dermatitis; Canine allergic inhalant dermatitis; Canine atopic disease.
• Atopy is a genetically predisposed inflammatory and pruritic allergic skin disease
• Characteristic clinical features
• Associated with IgE ab to environmental allergens
• Dogs → skin disease with orcasional organ involvement
• Cats → also devp. Dermatitis also but may also have asthma like respiratory problems
• Atopy is reported to account for 8-30% of canine skin diseases. o The prevalence in the cat population is much lower. Etiology IgE mediated Type 1 Hypersensitivity Contributing factors:
• Environmental Allergens
• Staph. Pyoderma
• Malassezia dermatitis
• Concurrent flea or food allergy
• Temperature and humidity Age and sex predeliction
• First seen between 6mths-3yrs (rarely develops in dogs ˃7yrs
• No sex predeliction but females reported to be more commonly affected Breed Predeliction
• Dogs : Boxer, Boston terriers, Cairn terrier,Sharpei, English bulldogs, English/Irish setters, golden retrievers/labradors, WHWT, fox terriers, yorkies
• Cats → not been reported Seasonal Incidence → initially seasonal but progresses to non-seasonal Clinical Signs in Dogs AD should be considered as a dif. Dig. in any dog with:
• Recurrent staph or malassezia dermatitis
• Otitis externa Pruritis → Initial and most outstanding C.S. in dogs and cats
• Pruritus may be the only sign in some dogs.
• Most of the lesions observed are secondary to self-trauma.
• Pruritis on one or more of the following: Face, ears, ventrum and distal limbs (can become generalized)
• Currently a lot of debate on pathognomic lesions for AD. (assuming 20 lesions aren't present)
• Some dogs have no primary lesions
• Others → Rash (macular/popular dermatitis)
• Chronic self trauma leads to 20 lesions → alopecia, lichenification, hyperpigmentation, seborrhea
• Secondary pyoderma common → staphylococcus intermedius or Yeast dermatitis →
• Otitis externa → common in dogs with Ad
• Concurrent signs of fleas and flea allergy dermatitis are present in many patients. Clinical Signs in Cats
• Pruritis → Hallmark
• Other symptoms in cats are not like dogs
• Pruritis in cats may manifest as symmetric alopecia, military dermatitis or part of the eosinophilic comples lesions
• 20 bacterial or yeast infections or otitis less common Diagnosis : Diagnosis based on:
• Typical historical features
• Characteristic C.S.
• Exclusion of differential diagnoses Diagnostic Approach Step 1
• Dx. And Tx. 20 infections
• Dx. And TX concurrent flea allergy
• Dx. And tx scabies Step 2
• Confirm that the 20 infection, flea allergies and scabies are ruled out
• Determine that residual pruritis remains
• If pruritis is seasonal and flea allergy has been ruled out = AD
• If pruritis is non-seasonal, carry out a food trial to rule out food allergy Step 3
• If food trial eliminates the issue = food allergy
• Partial response with food trial → Food allergy and AD likely
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