Term
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Definition
| A change in the color of the skin. It is flat, if you were to close your eyes and run your fingers over the surface of a purely macular lesion, you could not detect it. |
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Term
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Definition
| A solid raised lesion that has distinct borders and is less than 1 cm in diameter. They may have a variety of shapes in profile (domed, flat-topped, umbilicated) and may be associated with secondary features such as crusts or scales |
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Term
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Definition
| A raised solid lesion more than 1 cm. and may be in the epidermis, dermis, or subcutaneous tissue. |
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Term
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Definition
| A solid mass of the skin or subcutaneous tissue; it is larger than a nodule. |
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Term
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Definition
| A solid, raised, flat-topped lesion greater than 1 cm. in diameter. It is analogous to the geological formation, the plateau |
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Term
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Definition
| Raised lesions less than 1 cm. in diameter that are filled with clear fluid. |
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Term
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Definition
| Circumscribed fluid-filled lesions that are greater than 1 cm. in diameter. |
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Term
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Definition
| Circumscribed elevated lesions that contain pus. They are most commonly infected (as in folliculitis) but may be sterile (as in pustular psoriasis). |
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Term
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Definition
| An area of edema in the upper epidermis. |
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Term
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Definition
| Linear lesions produced by infestation of the skin and formation of tunnels (e.g., with infestation by the scabitic mite or by cutaneous larva migrans). |
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Term
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Definition
| The permanent dilatation of superficial blood vessels in the skin and may occur as isolated phenomena or as part of a generalized disorder |
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Term
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Definition
| Consists of flakes or plates that represent compacted desquamated layers of stratum corneum. |
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Term
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Definition
| The result of the drying of plasma or exudate on the skin. |
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Term
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Definition
| Thinning or absence of the epidermis or subcutaneous fat. |
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Term
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Definition
| A thickening of the epidermis seen with exaggeration of normal skin lines. It is usually due to chronic rubbing or scratching of an area. |
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Term
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Definition
| Slightly depressed areas of skin in which part or all of the epidermis has been lost. |
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Term
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Definition
| Traumatized or abraded skin caused by scratching or rubbing. |
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Term
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Definition
| Linear cleavage of skin which extends into the dermis. |
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Term
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Definition
| When there is necrosis of the epidermis and dermis and sometimes of the underlying subcutaneous tissue. |
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Term
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Definition
| The permanent fibrotic changes that occur on the skin following damage to the dermis. |
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Term
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Definition
| A hard plaque covering an ulcer implying extensive tissue necrosis, infarcts, deep burns, or gangrene. |
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Term
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Definition
| An exaggerated connective tissue response of injured skin that extend beyond the edges of the original wound. |
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Term
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Definition
| A small (1-2mm) red or purple spot on the body, caused by a minor hemorrhage |
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Term
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Definition
| The appearance of red or purple discolorations on the skin that do not blanch on applying pressure (<1 cm diameter) |
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Term
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Definition
| The appearance of red or purple discolorations on the skin that do not blanch on applying pressure (>1cm diameter) |
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Term
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Definition
| Occurs when there are peeling sheets of scale following acute injury to the skin. |
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