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14 Cards in this Set
- Front
- Back
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What are the 3 components of hair?
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infundibulum - upper section of hair, ostium to sebaceous duct
Isthmus - mid section attach to arrector pili muscle Inferior segment - lower segment, arrector pili to dermal papilla |
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What is the hair cycle?
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Anagen - growth
Catagen - Regression Telogen - Resting Exogen - Expulsion of club hair |
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Hair cycle varies according to what components?
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Species
Breed Body site Type of Hair influenced by many systemic factors but mostly by locally directed activities |
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What is synchronous shedding?
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wave-like shedding seen in retrievers
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What is mosaic shedding?
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asynchonous shedding where each follicle is at a different stage
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What are the two different hair types?
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primary - guard compound hair where there are 3-5 hairs per follicle
secondary - down undercoat where there are about 2 -15 follicles per unit (dogs) 10 - 20 follicles per unit (cats) |
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What are the two types of alopecia?
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puritic and non puritic
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What are types of puritic alopecia?
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allergic
parasitic infectious |
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What are types of non-puritic alopecia?
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inflammatory - usually multifocal lesion affecting limbs and face
Non-inflammatory - usually diffuse lesion affect trunk area |
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What are some examples of non-puritic alopecia?
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Dystophy/dysplasia like in color dilution alopecia or black hair follicle dysplasia
Hair cycle arrest like in endocrine and endocrine look-alike disorders Alopecia X, post clipping alopecia, telogen anagen defluxion, breed related alopecia |
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What are some examples of puritic alopecia?
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Sebaceous adenitis
Alopecia areta Pseudopalade Dermatomyositis Vasculitis Leishmaniosis |
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What are some clues for non-inflammatory non-puritic alopecia?
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Systemic disease - hypothyroid/hypercortisism
Breed - alopecia X, congenital, color dilution Coat color - color dilution/ black hair color dysplasia Age - (juvenile) congenital hypotricosis (young) alopecia X, pattern baldness, color dilution (old) hypothyroidism, hypercortisism Sexual status - gonadal sex hormone imbalances |
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What are diagnostic procedures for inflammatory non-puritic alopecia?
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For pyoderma, dermatophytes and demodex use skin scrapings, cytology DTM culture or biopsy
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What are diagnostic procedure for non-imflammatory non-puritic alopecia?
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CBC
Chem Panel UA Specific tests biopsy |
