Untitled Deck Flashcards
(35 cards)
What is atrophy?
Thinning of the epidermis, glossy, transparent, paper thin, loss of normal skin lines. Decrease in dermal connective tissue results in depression of the skin. Diminution of the size of the cell, tissue, organ, or part of the body.
What are bullae?
Fluid filled cavity or elevation greater than 0.5cm.
What is a crust?
Hardened deposits when serum, blood, or purulent exudate (pus) dries on the surface of the skin.
What is a cyst?
Encapsulated cavity or sac with a true epithelium that contains fluid or semisolid material. Follicular openings may be prominent. Can be hard, doughy, or fluctuant.
What is scale/desquamation?
Flat plate or flake arising from the outer-most layer of the stratum corneum.
What is ecchymosis?
Larger, bruise-like purpuric lesion, larger patches do not blanche; the blood doesn’t go elsewhere.
What is erythroderma?
Generalized deep redness of the skin involving more than 90% of body surface; scaling or desquamation generally follows (red man syndrome).
What is erosion?
Moist, circumscribed lesion that results from loss of portion or all of the viable epidermal or mucosal epithelium; superficial, not deep.
What is excoriation?
Surface excavations of epidermis that result from scratching (picking skin).
What is a fissure?
Linear loss of continuity of skin’s surface or mucosa, results from excessive tension or decreased elasticity of the involved tissue. Frequent in the palms or soles where there is thick stratum corneum.
What is a scar?
Proliferation of fibrous tissue that replaces previously normal collagen after wound or ulceration. Can be hypertrophic (elevated) or atrophic (sunken).
What is a keloid?
Scar that exceeds the area of initial wound.
What is lichenification?
Reactive thickening of the epidermis due to repeated rubbing. Changes in collagen of the underlying dermis.
What is a macule?
Flat lesion, even with surrounding skin, perceptible as an area of color differing from surrounding skin or mucous membrane. Cannot be palpated.
What is a nodule?
Solid round palpable lesion larger than 0.5cm, deeper than papule/plaque, can go all the way down to subcutaneous layer.
What is a papule?
Solid elevated lesion less than 1 cm in size, majority projects above plane of surrounding skin; does not go below the skin.
What are petechiae?
Small, pinpoint purpuric macules (purple spots from blood vessels breaking).
What is a plaque?
Solid plateau-like elevation, diameter larger than 1cm; you have to palpate.
What is purpura?
Extravasation of blood from cutaneous vessels into skin or mucous membranes; does not blanche.
What is a pustule?
Circumscribed raised cavity in the epidermis containing pus; may contain bacteria or be sterile.
What is telangiectasia?
Persistent dilation of small capillaries in the superficial dermis; fine, bright, non-pulsatile red lines or net-like patterns on the skin.
What is poikiloderma?
Combination of atrophy, telangiectasia, and varied pigmentary changes (hyper and hypo); gives rise to a dappled appearance of the skin.
What is an ulcer?
Defect in which the epidermis and at least the upper dermis has been removed. Borders may be rolled, undermined, punched out, jagged or angular.
What is a vesicle?
Fluid filled cavity or elevation smaller than 0.5cm.
