derm-bact
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- Describe the lesions seen with Acute moist dermatitis.
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-sharply demarcated circular
-red moist exudative
-alopecic in center
-painful
-hair sticks around margins
-may occur rapidly - What are the causes of Acute moist dermatitis?
-
-self trauma
-allergic disease
-ectoparasites
-anal sac problems
- otitis externa
-irritants
-FB
-fur mats in coat
-densely coated animals are predisposed - What is a good management plan for treatment of Acute Moist Dermatitis?
-
-correct problem
-clip and clean
-astringent
-corticosteriod sprays
-short term oral pred to dec purities
-prevent continues self trauma
-systemic antibiotics if satellite lesions or folliculitis
-rarely culture: select antibiotics against Staph
-clavomox, cephalexin, clindamycin - What diagnostics tool would one use to work up a case of Pododermatitis?
-
-cytology
-skin scrape
-fungal culture
-biopsy
-radiographs - What is the treatment for Pododermatitis?
-
-eliminate underlying ause
-prevent trauma
-foot soaks
-prolonged systemic antibacterial therapy
-surgical debridement in severe cases - What is the value of a skin cytology?
- allows you to determine if you are looking at bacteria, fungal, yeasts, etc.
- What are the indications for performing a skin biopsy?
- When you are unable to identify the organism by other means
- How does a woods light help in identifying dermatophytes?
- roughly 50 % of M. canis flouresce under woods light
- Describe your treatment for perianal pyoderma in a GSD.
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-systemic antibiotics
-cyclosporin
-topical tacrolimus
-corticosteroids
-debridement - What are the signs of puppy strangles?
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-swelling
-inflammation
-pain in face,lips,eyelids,ears
-swollen lymph nodes
-fever
-abcesses may open and drain - Describe a diagnostic plan for puppy strangles.
-
clinical appearance
-history
-culture and sensitivity
-biopsy
-early culture of intact pustule is negative - Describe the theraputic plan for a puppy strangles case.
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-clean lesion
-oral corticosteroids
-concurrent systemic antibiotics
** steroids decrease scarring and speed healing** - describe a diagnostic plan for a draining tract/fistula in a cat.
-
-clinical lesions
-cytology
-culture and sensitivity
-biopsy - Describe a theraputic plan to treat a draining tract/fistula in a cat.
-
-surgical drainage and flushing
-systemic antibiotics
-consider FeLV/FIV - /
- /
- What are the lesions seen with Nocardiosis?
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-skin lungs widespread dissemination
-cellulitis, subcutaneous nodules
-limbs and feet often affected
-cats may have lesions on abdomen
-lymphadenopathy
-pyothorax, dyspnea - Waht is the cause of Nocardiosis?
-
N. asteroids
-N. brasillensis
-N. caviao
- N. nova
-common saprophyte
-infection through wound, ingestion, or inhalation - How is Nocardiosis diagnosed?
-
-aerobic culture
-cytology
-biopsy - How do you treat Nocardiosis?
-
surgical drainage
-varying antimicrobial susceptability - What are the lesions for feline leprosy?
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-ulcers,abcesses, fistula, plaques, nodules
-found on head and extremeties
-nasal or oral mucosa sometimes
-regional lymphadenopathy
-no systemic illness - What is the cause of feline leprosy?
-
-Mycobacterium lepraemurium
-possibly transmitted by rats
-has been found in insect vectors
-more common in cats 1-3 yrs old - How do you diagnose feline leprosy?
-
-history
-PE
-cytology of exudates
-skin biopsy
-can't usually culture - How do you treat feline leprosy?
-
-surgical excision
-clofazimine
-low doses of flouroquinolones or docycline - Describe the lesions seen with Opportunistic Mycobacterial Granulomas
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-Most often in cats
-chronic SQ abcesses and fistula
-Usually found in caudal abdominal, inguinal, or lumbar areas
-may be painful
-solitary lesions usually symmetrical involvement
-Immune-suppressed may hav widespread lesions and systemic illness - What is the cause of opportunistic mycobacterial granulomas?
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-M. fortultum, chelonei, pheil, xenopl, thermoresistible, smegmatis
-enters through cat bite or puncture wound - How do you diagnose opportunistic mycobacterial granulomas?
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-History
-PE
-cytology of exudates
-skin biopsy
-PCR
-cultures often grow rapidly - What is the treatment for opportunistic mycobacterial granulomas?
-
-spontaneous remission can occur
-surgical excision
-drug susceptibility varies
---tetracycline
---clarithromcin
---enrofloxacin
---clofazimine - What is the most common bacterial pathogen of dogs?
- Staph
- What is the most ommon bacterial pathogen of skin of cats?
- P. multocida
- What are the three most common causes of folliculitis in dogs?
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-Staph intermedius
-dermatophytes
-demodex - What tests should be performed to diagnose canine superficial bacterial folliculitis?
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-cytology
-skin scraping
-fungal culture
-biopsy
-culture and sensitivity
// mixed bacterial infections
// treatment is going to be prolonged
//current antibiotic treatment is not effective - What is the pathophysiology of furunculosis?
- bacterial folliculitis--furunculosis--deep pyoderma
- What breed of dog is predisposed to recurrent deep folliculitis and furunculosis?
- Joey Timberlake