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Dermatology
Feline Allergic Skin Dz
74
Veterinary Medicine
Professional
03/19/2012

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Cards

Term
Is miliary dermatitis a dz?
Definition
No; It is a rxn pattern
Term
What is the primary lesion of miliary dermatitis?
Definition
Erythematous papule that readily becomes encrusted
Term
Where are the lesions located in milary dermatitis?
Definition
Any part of the body
Term
How is miliary dermatitis better appreciated?
Definition
Palpation, especially in long-haired cats
Term
What can miliary dermatitis lesions resemble (when large & crusted)?
Definition
Pemphigus foliaceous
Term
What are possible etiologies of miliary dermatitis?
Definition
Atopic dermatitis, Flea allergy, Food allergy, lice, bacterial folliculitis, trombicula, dermatophytosis, cheyletiella, idiopathic
Term
Is Staphylococcal skin infection more common in dogs or cats?
Definition
Dogs
Term
What is the Tx for miliary dermatitis?
Definition
ID & treat the cause
Term
What is used for idiopathic miliary dermatitis or for symptomatic Tx?
Definition
Corticosteroids (Prednisolone or Methylprednisolone); Megestrol acetate
Term
What must be taken into account when using megestrol acetate?
Definition
Many SE: Polyphagia, Personality change, Endometritis/Uterine stump abscess, Adrenocortical suppression, PD, DM, Mammary hyperplasia or carcinoma
Term
What are the clinical features of head & neck pruritis?
Definition
Crusting lesions w/ self-excoriation centered around the head & neck
Term
What are possible etiologies of head & neck pruritis?
Definition
Food allergy>Atopic dermatitis; Notoedres; Autoimmune (Pemphigus Foliaceous)
Term
What is the Tx of head & neck pruritis?
Definition
ID & treat the cause
Term
What are the 3 subsets of eosinophilic granuloma complex?
Definition
Eosinophilic Plaque; Linear Granuloma; Eosinophilic (Indolent) Ulcer
Term
What type of lesions are seen in eosinophilic plaque?
Definition
Well-demarcated, raised, oozing, ulcerated plaques
Term
What is the distribution of eosinophilic plaques?
Definition
Random w/ predilection for abdomen & medial thighs
Term
Eosinophilic plaque lesions are usually _____, & there may be _____.
Definition
Highly pruritic; Regional lymphadenopathy
Term
Is there peripheral a/o tissue eosinophilia in eosinophilic plaques?
Definition
Both (Marked)
Term
What are the Ddx for eosinophilic plaque?
Definition
Bacterial & fungal granuloma, Mast cell tumor, Lymphoma (mycosis fungoides)
Term
What are possible etiologies of eosinophilic plaques?
Definition
Flea allergy, Atopy, Idiopathic, Food allergy, Excessive licking, Bacterial infection
Term
What is the role of continual licking in eosinophilic plaques?
Definition
Sensitizes the cat to the allergens present in saliva, inducing an autoimmune response
Term
What is the Tx for eosinophilic plaques?
Definition
ID & treat cause; Corticosteroids for idiopathic
Term
What is another name for linear granuloma?
Definition
Collagenolytic granuloma
Term
Linear lesions of linear granuloma usually affect _____. (Distribution)
Definition
Posterior aspect of 1 or both PLs
Term
Describe nodular lesions of linear granuloma.
Definition
Vurrucose appearance in the mouth
Term
Where can linear granulomas result in swelling?
Definition
Chin
Term
Is there tissue a/o peripheral eosinophilia w/ linear granulomas?
Definition
Tissue (marked) +/- peripheral
Term
What is the Ddx for linear granulomas?
Definition
Neoplasia (oral); Acne (chin); No Ddx for linear
Term
What is the Tx for idiopathic linear granuloma?
Definition
Corticosteroids
Term
What is an incorrect term for eosinophilic ulcers?
Definition
Rodent ulcer
Term
What are clinicopathologic features of eosinophilic ulcers?
Definition
Ulcerated lesion of the upper lip, occasionally on other body parts
Term
Is tissue a/o peripheral eosinophilia a feature of eosinophilic ulcer?
Definition
Neither
Term
What are Ddx for eosinophilic ulcer?
Definition
SCC (lip); Ulcer of infective origin; Mast cell tumor
Term
_____% of eosinophilic ulcers are idiopathic.
Definition
25%
Term
What are possible etiologies of eosinophilic ulcer?
Definition
Allergy (Flea) +/- Bacterial; Idiopathic
Term
What is the Tx for eosinophilic ulcer?
Definition
ID & Treat cause; Parenteral or intralesional corticosteroids, +/- Abx
Term
What is another name for self-induced hair loss?
Definition
Barbered alopecia; Bald Belly Syndrome
Term
What is the clinical appearance of barbered alopecia?
Definition
Usually symmetrical involving flank & ventrum; short, stubbly hairs left behind
Term
How is barbered alopecia Dx?
Definition
Examine hair shafts (Trichogram): Shorn off tips
Term
What is the etiology of barbered alopecia?
Definition
Any allergic skin dz
Term
What is Tx for barbered alopecia?
Definition
ID & Tx the cause
Term
How are cases of allergic & other skin dz that do not fit readily into another pattern described?
Definition
Generalized, crusting and alopecic dermatitis
Term
Is feline atopic dermatitis more or less well characterized than CAD?
Definition
Less
Term
Is FAD inherited?
Definition
Uncertain
Term
What is the cardinal CS of FAD?
Definition
Pruritis
Term
Some cats w/ FAD may suffer from concomitant _____.
Definition
feline asthma
Term
FAD cats may show any combination of:
Definition
Self-induced hair loss; Miliary dermatitis; Eosinophilic plaqus; Eosinophilic ulcers & Linear granulomas (less reliable)
Term
How is FAD Dx?
Definition
CS w/ absence of other explanation; Demonstration of allergen-specific IgE
Term
How is allergen-specific IgE demonstrated in FAD Dx?
Definition
IDT; In vitro tests w/ antifeline IgE or Fce receptor a-chain
Term
Is IDT more sensitive in cat or dog?
Definition
Dog
Term
Is antifeline IgE or Fce receptor a-chain more sensitive for FAD Dx?
Definition
Antifeline IgE
Term
What is the Tx for FAD?
Definition
Hyposensitization, Corticosteroids, Chlorpheniramine
Term
What is the most effective antihistamine in cats?
Definition
Chlorpheniramine
Term
_____% of feline food allergy case lesions are restricted to the head & neck.
Definition
33%
Term
What is the Dx approach to feline food allergy?
Definition
Hypoallergenic diet for up to 8 weeks
Term
How are home-made diets used in feline food allergy?
Definition
LT-control (rather than ST-Dx)
Term
What may be necessary for cats on home-made diets?
Definition
Taurine supplementation
Term
How common is contact allergy in the cat?
Definition
Rarely if ever seen
Term
What skin conditions are associated w/ FeLV?
Definition
Recurrent abscess, Cellulitis, Recurrent paronychia
Term
What skin conditions are associated w/ FIV?
Definition
Recurrent otitis externa, Demodicosis, Gingivostomatitis, Recurrent Abscess
Term
Is Feline Cowpox virus zoonotic?
Definition
Yes
Term
What is the reservoir for feline cowpox virus?
Definition
Wild rodents
Term
What are the lesions of feline cowpox virus?
Definition
Papules, Macules, Nodules (all w/ crusts)
Term
What is the expected outcome of feline cowpox virus?
Definition
Spontaneous recovery
Term
FHV-1 usually follows from a _____.
Definition
Respiratory infection
Term
How does FHV-1 typically present?
Definition
Inflamed plaques (may ulcerate) in the vicinity of the nares
Term
What is seen on histopath w/ FHV-1? What is a possible result?
Definition
Prominent eosinophils; MisDx of eosinophilic granuloma
Term
What is used to Dx FHV-1?
Definition
PCR
Term
What is Tx for FHV-1?
Definition
w-Interferon; Famcyclovir (antiviral)
Term
Feline calicivirus infection is typically associated w/ _____.
Definition
Upper Respiratory dz & Conjunctivitis
Term
Where does feline calicivirus persist? What is the result?
Definition
Oropharynx; Stomatitis, Ulceration of tongue a/o hard palate
Term
Where does feline calicivirus persist? What is the result?
Definition
Oropharynx; Stomatitis, Ulceration of tongue a/o hard palate
Term
What is a typical presentation of Feline calicivirus infection?
Definition
Paw & Mouth Dz (oral lesions + ulcerated lesions of carpal region) +/- Ecchymoses
Term
What is Tx for feline calicivirus?
Definition
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