SA Med MT II
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What type of superficial pyoderma produces a moth-eaten appearance?
What explains varying manifestations of staphylococcal folliculitis? 2
- Varying toxins
- Differing immune response (Type 1 IgE or Type 4 cell mediated)
What type of reaction is seen in furrunculosis (deep pyoderma)?
- Pustular exudative reaction in which purulent material is readily expressed
- Nodular reaction
What type of deep pyoderma dissects along tissue plains?
When should you do antibiotic sensitivity testing for canine staphylococcal pyoderma?
In area where there is incidence of methicillin-resistant staph is common
How is bacterial overgrowth (surface pyoderma) usually managed?
How do you treat an underlying folliculitis in pyotraumatic dermatitis (surface pyoderma)?
- Short course of corticosteroids
How are fold pyodermas (surface pyoderma) treated? 3
- Clipping hair
- Apply steroid/antibiotic cream
- Permanent cure is surgical correction
How long do you administer antibiotics for superficial pyodermas?
- Impetigo: 15 days
- Folliculitis: 15-20 days or longer
How long should you administer antibiotics for deep pyodermas?
Minimum of 30 days
What are some useful antibiotics for pyoderma therapy? 4
- Cephadroxyl & Cephalexin
What antibiotics are usually not effective against S. pseudointermedius infections? 4
Should corticosteroids be given along with antibiotic therapy in treating pyodermas?
What type of topical therapy is suggested for deep pyodermas?
Povidone iodine bath
What animal is the main reservoirs for MRSP?
What animal is the main reservoirs for MRSA?
What are two important things to remember when managing MRSs? 2
- Ensure you give attention to underlying causes
- Avoid last chance antibiotics
What are some factors that predispose pyodermas to recurrence?
- Atopic dermatitis
- Tendancy to surface colonization (Seborrhoea)
- Integrity of skin barrier is impaired
How should you approach recurrent pyodermas? 6
- Evaluate for seborrhoea
- Look for Demodex
- Check thyroid fx
- Skin test
- Elimination diet for food allergy
- Immunological tests
How should idiopathic recurrent pyodermas be managed? 3
- Antibiotic therapy w/ repeated in vitro sensitivity tests
- Antibacterial shampoos
What type of equine skin disease is commonly seen in warmer months, is common in areas of the saddle, shoulders, lateral trunk, cervical areas, and distal limbs?
Equine staphylococcal folliculitis ("Saddle sores", "Summer rash", and "Sweating eczema")
How should equine staphylococcal folliculitis be treated? 2
- Antimicrobial shampoos
- Procaine penicillin
What mycobacterial infection causes nodular skin disease in dogs and cats?
What organism causes feline leprosy, producing nodular, granulomatous lesions especially the head and ears?
What bacterial skin disease of dogs produces nodular, granulomatous lesions of the head and ears and has been reported in Australia and the Western USA?
Canine leprosy (diagnosed by PCR)
What is a fungal infection of the Stratum corneum, hair or nail caused by Microsporum, Trichopyton, or Epideropyton?
What is the most common dermatophyte in dogs and cats?
What is the most common dermatophyte in horses? 2
- Trichopyton equinum
- Trichopyton mentagraphytes
What is the most common dermatophyte in guinea pigs, hamsters and rabbits?
What is responsible for self cure of dermatophytosis, usually within 60-90 days?
What are some different ways to diagnose dermatophytosis? 3
- Wood's Lamp
- Microscopic examination of plucked hairs
- Fungal culture (most reliable)
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