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23 Cards in this Set
- Front
- Back
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macule
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flat lesion, different color, <5 mm
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patch
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flat lesion, different color, >5 mm
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papule
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solid elevated lesion, <5 mm
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plaque
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elevated flat top lesion, >5 mm
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wheal
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firm edematous flat topped papule or plaque, from infiltration of dermis with fluid that lasts < 24 hours
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vesicle
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circumscribed elevated collection of fluid, <5 mm
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bulla
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circumscribed elevated collection of fluid, >5 mm
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pustule
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elevated collection of purulent fluid, varies in size
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nodule
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solid palpable lesion located under epidermis
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scale
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abnormal shedding or accumulation of stratum corneum
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crust
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dried serum, blood or purulent exudate on skin
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excoriation
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linear or punctate erosion of epidermis because of scratching
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erosion
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focal loss of epidermis, doesn't penetrate dermoepidermal junction, therefore heals without scar
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ulcer
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depressed lesion with focal loss of epidermis and dermis that heals with scarring
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lichenification
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thickened skin with accentuation of skin lines because of chronic rubbing
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hyperkeratosis
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increased thickness or hyperplasia of cornified layer (corneum)
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parakeratosis
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hyperkeratosis where pyknotic nuclei are retained in cornified layer (u. decreased granular layer, and rapid cell turnover like with psoriasis)
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hypergranulosis
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increased # cells in granular layer
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acanthosis
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epidermal hyperplasia (increase # cells in spinous layer)
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papillomatosis
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acanthosis with dilated projections above the skin
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spongiosis
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edema between the spinous cells resulting in widening of the intercellular spaces
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dyskeratosis
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premature abnormal keratinization of cells having eosinophilic cytoplasm and small, darkly staining nuclei
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acantholysis
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loss of cohesion between epidermal cells that leads to intraepidermal clefts and vesicles
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