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17 Cards in this Set
- Front
- Back
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What are the characteristics of Malassezia pachydermatitis
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Non obligatory lipophilic
yeast broad based budding normal inhabitant of canine skin |
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What makes Malassezia pachydermatitis turn pathogenic
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environment (humidity temp)
immune function breed biased concurrent disease - atopy |
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What primary diseases are associated with Malassezia dermatitis
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Allergies
endocrinopathies disorders of cornification systemic illness |
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How does Malassezia cause discomfort
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activation of alternative pathway of complement
hypersensitivity to fungal allergens proteases / zymosan contribute to inflammation and pruritis good friends with Staph |
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What are key clinical features of Malassezia
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severe progressive pruritis
partial response to glucocorticoids otitis externa weight loss |
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causes of intense pruritis
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Scabies
Flea allergy dermatitis Malassezia dermatitis Familial seborrhea |
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Key PE findings
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severe pruritis
erythema / scale / crusting lichenified / hyperplastic / hyperpigmented skin alopecia enlarged ln yeast otitis |
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How do you diagnose Malassezia
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History
PE derm data base + allergy testing / work up / endocrine function test / evaluate immune system |
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What kind of issue is Malassezia
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secondary problem - treat yeast infection +
look for primary factor (ie atopy) |
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Common areas for yeast infections
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Interdigital dorsal
Ventrum of feet Lip fold (rub face) Axillary / ventral neck Inguina Perivulvar folds base of claw |
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What is often associated with Malassezia infections
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Staph infections
treat with ab |
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What are the topical therapy options
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Selenium disulfide
Chlorhexidine Miconazole Clotrimazole Enilconazole Ketoconazole nystatin |
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How often should topical therapy be used
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3x / week
1-2 x as adjunctive therapy Apply Let sit for 10 min Rinse |
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What are spot treatment options
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Wipes
Sprays Flushes |
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What are reasons to use systemic therapy
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owner cannot/wont use topical
severe infections cutaneous and otic infections |
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What should accompany systemic therapy
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Still try to bathe 1x / week
use topical |
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What are key management points
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-Look for the primary factor (Why)
-therapy should never be completely discontinued (maintenance therapy) |
