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30 Cards in this Set
- Front
- Back
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What is a macule?
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an alteration in skin color that cannot be felt. <0.5cm
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What is a patch?
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same as a macule but larger than 0.5cm.
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What is a papule?
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palpable solid lesions smaller than 0.5cm
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What is a plaque?
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Same as a papule, but larger than 0.5cm, formed by the confluence of papules. An elevated lesion in which the diameter is greater than its height.
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What is a nodule?
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a firm lesion that is thicker or deeper than the average papule or plaque. If the nodule is SubQ, it might not elevate the skin surface. Generally the height is greater than the diameter.
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What is a tumor?
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same as a nodule, but even larger
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What is a vesicle?
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Raised, clear fluid filled lesions that contain pustular material
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What is a wheal?
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flat-topped, palpable lesions of variable size and configuration that represent dermal collections of edema fluid.
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What is a cyst?
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enclosed cavities with a lining that can contain a liquid or semisolid material that are located deep in the skin, covered by normal epidermis.
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What is a crust?
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remains of blood, pus, et dried on. Example: impetigo
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What is an erosion?
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moist, slightly depressed area representing a blister base with a roof of the blister removed.
Ex: burns, aphthous ulcers, herpes simplex. |
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What is an ulcer?
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same as an erosion, but represents loss of epidermis and dermis.
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What are scales?
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excess dried epitdermal cells.
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What is desquamation?
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peeling of sheets of skin after an acute injury.
ex: toxic drug reaction |
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What is atrophy?
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skin surface is depressed due to thinning.
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What is an excoriation?
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traumatized area of skin caused by scratching or rubbing.
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What is a fissure?
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linear, wedge-shaped cracks.
Ex: peri-anal fissures |
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What is petechiae?
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a deposit of blood less than 0.5cm
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What is purpura?
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a deposit of blood greater than 0.5cm.
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What is Lichenification?
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thickening of the skin
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What is dermoscopy?
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a noninvasive technique using a magnifying device, that helps determine which lesions to biopsy. It improves the sensitivity and specificity for the diagnosis of melanoma.
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What is the Auspitz sign?
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removal of the plaque from psoriasis - the capillaries will bleed from beneath
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What is diascopy?
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a test for blanching performed by pressing a clear glass slide over a lesion to observe whether the lesion blanches in color.
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What type of rash does not blanch?
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hemorrhagic lesions (petechiae, purpura from vasculitis)
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What type of rash blanches?
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urticaria and inflammatory lesions
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What is a furuncle?
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boil - an infected hair follicle with an acute, red, hot, very tender, collection of pus. MRSA
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What is a carbuncle?
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multiple coalescing infected folliclces. Painful and eep, it drains through multiple follicular openings
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What is Ebstein anomaly?
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malformed tricuspid valve (ASD) upon maternal exposure to lithium
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What does exposure to phenytoin in utero cause?
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hypoplastic nails and phalanges
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What does Vit A derivative exposure in utero cause?
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cleft lip palate, MR, thymic agenesis
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