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11 Cards in this Set
- Front
- Back
macules
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small (<1cm), flat lesions. primary lesion in tinea versicolor. if you can feel it, then it is not a macule. usually caused by color changes in epidermis or upper dermis. indicates process is confined to epidermis. can have secondary changes such as scale or crust
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patch
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flat, larger than 1cm
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plaques
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large (>1cm), plateau-like, raised lesions. cast a shadow with side lighting. a proliferation of cells in epidermis or superficial dermis
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psoriasis
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primary lesion is a plaque. several 3-10cm bright pink round sharply circumscribed scaly plaques on extensor elbows, knees, lower back, and gluteal cleft
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papule
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raised lesion measuring <1cm. proliferation of cells in epidermis or superficial dermis
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nodule
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a larger, deep papule. a proliferation of cells down to the mid-dermis; overlying epidermis looks and feels normal, but proliferation of cells is in deeper tissues
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vesicles
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small, raised, fluid-filled lesions. primary lesion in shingles
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bulla
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large, fluid-filled blister (>1cm)
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pustule
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vesicle containing pus
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erosion
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a superficial loss of the epidermis. may occur after a vesicle forms and the top peels off. weeps and becomes crusted. a secondary change/characteristic
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ulcer
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erosion that involves the dermis. ulcers often heal with scarring; erosions usually do not.
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