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Dermatology - Dermatology VS 441 General considerations...

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    Dermatology VS 441
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    General considerations Skin is the largest organ in the body Point of first contact with the environment protects animal provides information (sensory functions) Reflects overall health of animal Approximately 25% of small animal practice is dermatology
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    General considerations Skin problems are obvious Skin has a limited repertoire of signs History taking and examination techniques require more detail than general physical Success/failure of therapy is more obvious!
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    Ectoparasites— Demodectic mange Demodex canis— found on normal animals Disease more common in dog than cat Sometimes called “red mange”
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    Demodectic mange Not transmissible Localized and generalized forms Generalized form – Some genetic predisposition Immunosuppressed individuals Certain breeds overrepresented Affected animals not breeding prospects Can end in euthanasia
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    Demodectic mange Localized form-- Primarily young dog More common form
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    Demodectic mange -clinical signs Localized Face, forelegs most common sites Alopecia and redness Usually non- pruritic
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    Demodex—clinical signs Generalized Entire skin surface involved Secondary bacterial infections Fever
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    Demodex--diagnosis Skin scraping Scrape all cases of pyoderma, seborrhea, and skin problems of feet Squeezing of skin can aid in pushing mites out of hair follicles Scrape deeply Large numbers of adults or high ratios of immature to adult mites are diagnostic An occasional mite will be seen in the normal dog
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    Demodex--treatment Localized— Topical treatment
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