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NUR 303 Ch 12
Skin, Hair, and Nails
Term | Definition |
---|---|
Alopecia | baldness; hair loss |
Annular | circular shape to skin lesion |
Bulla | elevated cavity containing free fluid larger than 1 cm in diameter |
Confluent | skin lesions that run together |
Crust | thick, dried-out exudate left on skin when vesicles or pustules burst or dry up |
Cyanosis | dusky blue color to skin or mucous membranes as a result of increased amount of nonoxygenated hemoglobin |
Erosion | scooped-out, shallow depression in skin |
Erythema | intense redness of the skin due to excess blood in dilated superficial capillaries, as in fever or inflammation |
Excoriation | self-inflicted abrasion on skin due to scratching |
Fissure | linear crack in skin extending into dermis |
Furuncle | boil; suppurative inflammatory skin lesion dur to infected hair follicle |
Hemangioma | skin lesion due to benign proliferation of blood vessels in the dermis |
Iris | target shape of skin lesion |
Jaundice | yellow color to skin, palate, and sclera due to excess bilirubin in the blood |
Keloid | hypertrophic scar, elevated beyond site of original injury |
Lichenification | tightly packed set of papules that thickens skin; caused by prolonged intense scratching |
Lipoma | benign fatty tumor |
Maceration | softening of tissue by soaking |
Macule | flat skin lesion with only a color change |
Nevus | mole; circumscribed skin lesion due to excess melanocytes |
Nodule | elevated skin lesion larger than 1 cm diameter |
Pallor | excessively pale, whitish-pink color to lightly pigmented skin |
Papule | palpable skin lesion smaller than 1 cm in diameter |
Plaque | skin lesion in which papules coalesce or come together |
Pruritus | itching |
Purpura | red-purple skin lesion due to blood in tissues from breaks in blood vessels |
Pustule | elevated cavity containing thick, turbid fluid |
Scale | compact desiccated flakes of skin from shedding of dead skin cells |
Telangiectasia | skin lesion due to permanently enlarged and dilated blood vessels that are visible |
Ulcer | sloughing of necrotic inflammatory tissue that cause a deep depression in skin, extending into dermis |
Vesicle | elevated cavity containing free fluid up to 1 cm in diameter |
Wheal | raised red skin lesion due to interstitial fluid |
Zosteriform | linear shape of skin lesion along a nerve route |