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Macro. Terms, Skin
Pathology, Basis of Disease-- Skin, Ch. 26
| Question | Answer |
|---|---|
| macule | circumscribed area of any size characterized by its flatness + usually distinguished from surrounding skin by its coloration. |
| papule | elevated, solid area that's 5 mm or less across |
| nodule | elevated, solid area that's greater than 5mm across |
| plaque | elevated, flat-topped area that's usually greater than 5 mm across |
| vesicle | fluis-filled, raised area that's 5 mm or less across |
| bulla | fluid-filled, raised area that's greater than 5 mm across |
| blister | common term used for a vesicle or bulla |
| pustule | discrete, pus-filled, raised area |
| wheal | itchy, transient, elevated area w/ variable blanching and erythema formed as the result of dermal edema |
| scale | dry, platelike excrescense; usually the result of imperfect cornification |
| lichenification | thickened + rough skin characterized by prominent skin markings; usually the result of repeated rubbing in susceptible persons. |
| excoriation | a traumatic lesion characterized by breakage of the epidermis, causing a raw linear area(a deep scratch). Such lesions are often self-induced. |
| onycholysis | loss of integrity of the nail substance. |