Feline skin disease Flashcards
What mite causes pinnal crusting in cats?
Cheyletiella blakei
What is the chewing lice species specific to cats?
Felicola subrostratus
What burrowing mite is associated with feline scabies and has not been in the UK since 1960s? It is highly pruritic, mainly affecting the ears, face and neck. It is contagious to dogs, foxes and rabbits and may be zoonotic
Notoedres cati
Demodex cati may cause localised disease or generalised (due to immunosuppression). What is the treatment for demodex?
Isoxazoline or lime sulphur dips
Demodex gatoi is more common than D. cati. Is the condition responsive to steroids?
No
Treat with isoxazoline or lime sulphur dip
Cat bite abscesses cause pyogranulomatous inflammation. What diseases/causes may you consider if the abscess is non-healing?
FIV/FeLV
Fungal or atypical bacteria infection
Foreign body
Immune-mediated disease
Malassezia is an overgrowth rather than an infection, often secondary to a primary disease. What type of dermatitis does it cause and what cat species are predisposed?
Seborrheic dermatitis
Sphynx cat, Devon Rex
How is Dermatophytosis (Microsporum canis) diagnosed?
Fungal culture - for definitive Dx
Woods lamp and Trichogram variable sensitivity
What is the topical and systemic treatment for Dermatophytosis (Microsporum canis)?
Topical miconazole, lime sulphur
Systemic itraconazole
(+ treat environment with bleach and Virkon)
Deep fungal infections are rare but may cause a dermatophytic granuloma or subcutaneous mycosis. How are these treated?
Long course of high dose, systemic anti-fungals (but side effects - hepatotoxic)
Surgical excision/digit amputation
Feline poxvirus is zoonotic, causing rapidly enlarge ulcerative lesions on the face and feet. What causes feline poxvirus?
Vole bite wounds
Seasonal disease, wildlife reservoir
Paraneoplasitc alopecia causes shiny skin +/- Malassezia on the ventrum. How is this diagnosed and what is the prognosis?
Dx: skin biopsy
Prognosis poor
What breed is affected by idiopathic facial dermatitis and how is this treated?
Persian - keratinisation disorder
Tx: anti-yeast therapy, keratolytic shampoos, ciclosporin
Feline acne is a keratinisation disorder that causes dark, waxy scales and secondary infections. How is this treated?
Topical antiseptics
Systemic antimicrobials
Anti-keratinolytics
Feline plasma cell pododermatitis is thought to be immune mediated. It may be associated with what virus or condition?
FIV
Glomerulopathy
What is the treatment for feline plasma cell pododermatitis?
Spontaneous regression
Surgery
Immune modulation (thought to be immune mediated)
What are feline cutaneous reaction patterns usually associated with?
Allergic skin disease
Hypersensitivity dermatitis
Feline cutaneous reactions patterns are usually associated with hypersensitivity dermatitis. What are the 4 patterns?
Self-induced, symmetrical alopecia (due to pruritis)
Head and neck excoriations and pruritis
Milliary dermatitis (papular crusts on dorsum, thighs and abdo)
Eosinophilic granuloma complex
What criteria are used to diagnose non-flea hypersensitivity dermatitis?
Favrot’s criteria
What age cats are usually affected by hypersensitivity dermatitis? What treatment are they usually responsive to?
6 months to 3 years
Steroid responsive
How is flea-bite hypersensitivity diagnosed?
Flea treatment trial for 6-8 weeks
How is a food-induced hypersensitivity dermatitis diagnosed?
Diet trial 8-12 weeks
What are the 4 components of managing a cat with non-flea, non-food induced hypersensitivity dermatitis?
Skin barrier - EFAs, topical lipids ad moisturising shampoos
Anti-inflammatories/immunomodulators
Allergen avoidance and immunotherapy
Control of flare factors - regular flea treatment, control 2o infections and anxiety
