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| A walled off collection of pus that usually is a painful, inflamed, firm or fluctuant (varying or unstable) mass. |
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| Thinning of the skin; opposite of hypertrophic, the thickening of the skin. example: atrophy occurs normally with agining; hypertrophy in Lichen planus |
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| a well-circumcised, infectious inflammation of the deeper skin layers. example: furuncle (infection of the hair follicle) |
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| a vesicle greater than 5mm in diameter. See definition of vesicle. Bullae and vesicles are also known as blisters. example: contact dermatitis, Bullous impetigo |
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| to run together, as when papules merge |
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| dermatologist's word for scab. A secondary lesion (it follows the primary lesion) example: eczema, seborrhea, impetigo |
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| a circumscribed lesion with a wall that may contain fluid or solid matter. example: epidermal cyst, pilar cyst |
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| edema - swelling due to increased fluid in body tissue |
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| a defect only of the epidermis, not involving the dermis it is different from an ulcer in terms of depth; also, an erosion should heal without scarring. An erosion will also result from excoriations (scratching), which are typically linear in nature. example: eczematous diseases, vesiculobullous diseases, neurotic excoriations, scratched insect bites. |
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| erythema (adj erythematous) |
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| redness. example: sunburn |
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| any eruption of the skin accompanied by inflammation. ex: drug reactions, erysipelas |
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| scratch mark on the surface of the skin; seen in many skin disorders that itch |
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these anatomical terms are used frequently in dermatology.
extensor surfaces, such as elbows, back of wrists, and from of knees, are sometimes associated with certain diseases. Whereas, the opposite areas - the antecubital surfaces, front of wrists (Same side as your palsm), and the back of your knees-are known as the flexor surfaces and are associated with different skin disorders. Confused? look up psoriasis (extensor surfaces) amd ecaema (flexor surfaces) |
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| crack in the skin surface. ex: chapping, tinea pedis, eczema |
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| localized itchy wheals that can burn or sting. See wheal |
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| thickening of the skin. keratin is a tough protein found in hair, nails, and the outer layer of skin. ex: corn, callus |
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| hypo- or hyperpigmentation |
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| an increase or decrease in pigment relative to the surrounding skin. example: Vitilgo, tenia versicolor (pityriasis versicolor), freckles, postinflammatory hyperpigmentation |
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| hardness of the skin relative to the surrounding area |
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| circumscribed area of pathologically altered tissue. this is a very broad term, not of much use in giving specific detail |
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| skin thcikening and ahrdening from continued irritaion. ex: occcurs in chronic atopic dermatitis (eczema) due to chronic rubbing or scratching |
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| the appearance of skin that results from steeping in a fluid. your fingers have this appearance after you take a long bath. ex: tinea pedia (in the toe webs), also described as sodden maceration |
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| a circumscribed area of change in normal skin color without elevation or depression of the surrounding skin. it is not palpable. a patch is the same as a macule, only larger (>.5cm) ex: freckle, fixed drug eruption, tinea versicolor, vitiligo, secondary syphilis |
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| a congenital discolored papule |
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| a circumscribed, often round, solid lesion more than 0.5 cm in diameter; a large nodule is referred to as a tumor. ex: furuncle, lymphoma, melanoma, warts. RAISED? |
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a superficial solid lesion less than 0.5cm in diameter. most of it is elevated above, rather than deep, within the plane of the surrounding skin. a papule is palpable...confluence of papules leads to the development of larger, usually flattopped, circumscribed, plateau-like elevations known as plaques. ex: molluscum contagiousum, skin tags, warts, acne,
Plaque: eczema, lichen planus, pityriasis rosea, psoriasis, seborrheic dermatitis. |
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| denoting the presence of both papules and scales. papulosquamous disorders: pityriasis rosea, lichen planus, seborrheic dermatitis |
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=macule >.5cm
a circumscribed area of change in normal skin color without elevation or depression of the surrounding skin. it is not palpable. ex: freckle, fixed drug eruption, tinea versicolor, vitiligo, secondary syphilis |
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larger, usually flattopped, circumscribed, plateau-like elevations that develop from the confluence of papules. a superficial solid lesion. most of it is elevated above, rather than deep, within the plane of the surrounding skin. it is palpable.
ex: molluscum contagiousum, skin tags, warts, acne,
Plaque: eczema, lichen planus, pityriasis rosea, psoriasis, seborrheic dermatitis. |
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| the way that the lesion looks when the skin disease begins, as opposed to the secondary lesion which occurs after scratching, infection, or ht enormal progression of the skin lesion |
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| a circumscribed superficial cavity of the skin that contains a purulent exudate. this may be white, yellow, or green. exudate is fluid that oozes out. ex: folliculitis, acne |
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| pertaining to pus. ex: a purulent discharge from an open abcess. |
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| this term is used to describe smaller lesions that surround the main lesion, like satellites orbiting a planet |
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| - flakes of the stratume corneum (the outermost layer of the skin) shedding of this skin is norma in small amounts but may increase with certain skin diseases. example: eczema, psoriasis, pityriasis rosea, dandruff |
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| like a serpent; this refers to the wavy line shapes of burrows, the product of the scabies mite, for example digging out tunnels in the epidermis ex: scabies |
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| an ulcer is a skin defect in which there has been loss of epidermis and the upper papillary layer of the dermis. synonymous iwth sore; different form an erosion in terms of depth. uclers always heal with scarring. ex: chancroid, syphilis chancre, neoplasms |
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circumscribed, elevated, superficial cavity containing fluid. less than 0.5cm in diameter; otherwise called a bulla
ex: herpes simplex, contact dermatitis, varicella zoster, impetigo, dyshidrotic eczema |
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| used to describe a purple discoloration of the skin. ex: lichen planus |
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circumscribed skin elevation or papule, caused by the papillomavirus. warts may have a vegetated appearance.
ex: human papillomavirus |
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raised mark on the skin. a firm edematous papule or plaque resulting from infiltration of the dermis with fluid; whelas are transient and may last only a few hours.
ex: hives, insect bites, emotional stress, exposure to heat, cold, or exercise |
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