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24 Cards in this Set
- Front
- Back
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How does skin regulate temperature?
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Vasoconstriction/dilation
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What are two general problems that can cause skin lesions secondarily?
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Liver dz or endocrinopathies
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How is seasonality related to skin problems?
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May be allergic reaction, or flea cycle
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What is pruritis generally caused by?
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Infectious diseases or allergies
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Alopecia without pruritis is often an indication of what?
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Endocrine dz or possible demodex or ringworm
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What is a secondary skin lesion due to?
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Biting or licking at primary lesion
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What is a macule? Patch? Purpura?
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Flat circumscribed area < 1cm
Macule > 1cm Macule caused by bleeding |
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What is a papule? Plaque?
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Raised area < 1cm
A group of papules |
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What is an elevated area > 1cm that effects the dermis and subcutis? What is an epithelial lined cavity filled with fluid or solid material? If not epi lined?
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Nodule
Cyst Vesicle (filled with clear fluid) |
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What is a pustule? What is a vesicle that is > 1cm?
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Small elevated area filled with pus
Bulla |
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What are the first lab tests do you want to run with skin problems? When may this not be useful?
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CBC, blood chemistry, urinalysis
In young dogs unless PE and hx indicate it |
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A skin scrap is used to detect what? What direction do you scrape? A deep scrape is to detect which mite?
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Mites
Direction of hair growth Demodex |
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What do you use cytology to detect? What are two techniques?
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Increase in WBC, bacteria and yeast
Direct or fine needle aspirate |
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What do you use a tape prep to detect?
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Mites, lice and yeast** (best method)
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What are trichograms used to detect?
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Pruitis, fungal infections, pigment defects and growth phase
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What lesion penetrates the dermis? Which doesn't? Are these classified as primary or secondary lesions?
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Ulcer
Erosion Secondary |
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Where are lesions located that are immune mediated?
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Mucocutaneous junctions
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List the seven secondary lesions
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Collarette, crust, excoriation, erosion, scale, scar, ulcer
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Are lichenification, hyerpigmentation, erythema, follicular cast, comedo, fissure primary or secondary lesions?
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Secondary
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What is coat brushing used to detect? What is the wet paper towel test used to detect?
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Lice, eggs, flea dirt and ease of epilation
Flea feces |
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What is a Wood's lamp used to detect? Aka? Do all fluoresce?
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Microsporum canis
Ringworm No, only 50% |
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Why is it difficult to do a bacterial culture on a lesion? When do you do one?
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Presence of normal flora
Presence of draining tract, pyoderma, cellulitis, no responding to tx |
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What two tests are used to detect fungus? What is a positive result?
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Dermatophyte test medium (DTM) and Sabouraud’s dextrose agar
Red color w/in 24hrs after colony grows |
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What are the two ways to test for allergies?
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Serologic or skin test
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