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31 Cards in this Set
- Front
- Back
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Primary or secondary lesion and definition: Patch
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Primary, Flat circumscribed skin discoloration that lacks surface elevation or depression > 0.5 cm in diameter
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Primary or secondary lesion and definition: Macule
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Primary, Flat circumscribed skin discoloration that lacks surface elevation or depression < 0.5 cm in diameter
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Primary or secondary lesion and definition: Papule
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Primary, Elevated solid lesion < 0.5 cm in diameter
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Primary or secondary lesion and definition: Plaque
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Primary, Elevated solid “confluence of papules” (>0.5 cm in diameter) that lacks a deep component
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Primary or secondary lesion and definition: Nodule
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Primary, Elevated solid lesion > 0.5 cm in diameter
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Primary or secondary lesion and definition: Scale
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Secondary, Thick flakes of dry, whitish material representing accumulations of stratum corneum due to hyperproliferation or increased cohesion of keratinocytes
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Primary or secondary lesion and definition: Hyperkeratosis
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Secondary, Accumulation of thickened stratum corneum which does not easily flake off
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Primary or secondary lesion and definition: Crust
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Secondary, Collection of dried secretions on the skin. Antecedent primary lesion is usually a vesicle, bulla, or pustule
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Primary or secondary lesion and definition: Lichenification
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Secondary, Thickening of the skin and accentuation or exaggeration of normal skin markings. Represents epidermal hyperplasia due to chronic rubbing.
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Primary or secondary lesion and definition: Erosion
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Secondary, Partial focal loss of epidermis which heals without scarring.
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Primary or secondary lesion and definition: Excoriation
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Secondary, Linear or angular erosion of epidermis due to scratching or picking
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Primary or secondary lesion and definition: Ulcer
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Secondary, Full-thickness focal loss of epidermis and dermis (and sometimes subcutis) which heals with scarring
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Primary or secondary lesion and definition: Fissure
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Secondary, Linear split or crack in epidermis and dermis with sharply defined walls
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Primary or secondary lesion and definition: Petechiae
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Primary, Extravasation of blood cells into the dermis < 0.5 cm in diameter
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Primary or secondary lesion and definition: Scar
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Secondary, Collection of new connective tissue. May be hypertrophic or atrophic. Smooth with lack of appendageal structures
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Primary or secondary lesion and definition: Sclerosis
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Secondary, Thickening of dermis which does not arise at the site of previous tissue injury
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Primary or secondary lesion and definition: Telangiectasis
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Secondary, Dilated superficial flood vessels that blanch with pressure
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Primary or secondary lesion and definition: Purpura
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Primary, Extravasation of blood cells into the dermis > 0.5 cm in diameter
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Primary or secondary lesion and definition: Cyst
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Primary, Elevated solid lesion > 0.5 cm in diameter containing fluid/semisolid material
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Primary or secondary lesion and definition: Wheal
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Primary, Firm, edematous plaque that is evanescent and pruritic
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Primary or secondary lesion and definition: Vesicle
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Primary, Elevated solid lesion < 0.5 cm in diameter containing clear fluid
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Primary or secondary lesion and definition: Bulla
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Primary, Elevated solid lesion > 0.5 cm in diameter containing clear fluid
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Primary or secondary lesion and definition: Pustule
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Primary, Elevated solid lesion < 0.5 cm in diameter containing purulent material
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Primary or secondary lesion and definition: Comedo
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Primary, Folliculocentric collection of sebum and keratin
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Primary or secondary lesion and definition: Burrow
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Primary, Narrow raised channel produced by a parasite
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Primary or secondary lesion and definition: Tumor
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Primary, Elevated solid lesion > 2 cm in diameter
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Type of scale: Psoriasis
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Example of micaceous scale
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Type of scale: Pityriasis rosea
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Example of collarette scale
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Type of scale: Tinea versicolor
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Example of fine or bran-like scale
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Type of scale: X-linked recessive ichthyosis
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Example of “dirty” brown scale
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Type of scale: Porokeratosis
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Example of cornoid lamella with “wall of China” appearance
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