Term
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Definition
flat,circumscribed area that is a change in the color of the skin
less than 1 cm
ex: freckles, flat moles (nevi) petechiae, measles, scarlet fever |
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Term
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Definition
elevated, firm, circumscribed area
less than 1 cm
ex: wart (verruca), elevated moles, lichen planus |
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Term
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Definition
a flat, nonpalpable, irregular-shaped macule
greater than 1 cm
ex: vitiligo, port-wine stains, Mongolian spots, café au lait patch |
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Term
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Definition
elevated, firm, and rough lesion with flat top surface
greater than 1 cm
ex: psoriasis, seborrheic and actinic keratoses |
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Term
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Definition
elevated, irregular-shaped area of cutaneous edema
solid and transient
variable diameter
ex: insect bites, urticaria, allergic reaction |
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Term
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Definition
elevated, firm, circumscribed lesion
deeper in dermis than a papule
1-2 cm
ex: erythema nodosum, lipoma |
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Term
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Definition
elevated and solid lesion
may or may not be clearly demarcated
deeper in dermis
greater than 2 cm
ex: neoplasm, benign tumor, lipoma |
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Term
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Definition
elevated, circumscribed, superficial, not into dermis
filled with serous fluid
less than 1 cm
ex: varicella, herpes zoster |
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Term
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Definition
vesicle greater than 1 cm
ex: blister, pemphigus vulgaris |
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Term
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Definition
elevated, superficial lesion
similar to a vesicle but filled with purulent fluid
ex: impetigo, acne |
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Term
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Definition
elevated, circumscribed, encapsulated lesion
in dermis or subcutaneous layer
filled with liquid or semisolid material
ex: sebaceous cyst, cystic acne |
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Term
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Definition
fine, irregular, red lines produced by capillary dilation
ex: telangiectasia in rosacea |
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Term
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Definition
heaped-up, keratinized cells
flaky skin; irregular; thick or thin; dry or oily; variation in size
ex: flaking of skin with seborrheic dermatitis following scarlet fever or flaking of the skin following a drug reaction; dry skin |
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Term
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Definition
rough, thickened epidermis secondary to persistent rubbing, itching or skin irritation
often involves flexor surface of extremity (knees/elbows)
ex: chronic dermatitis |
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Term
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Definition
irregular-shaped, elevated, progressively enlarging scar
grows beyond the boundaries of the wound; caused by excessive collagen formation during healing |
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Term
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Definition
| thin to thick fibrous tissue that replaces normal skin following injury or laceration to the dermis |
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Term
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Definition
loss of the epidermis; linear hollowed-out, crusted area
ex: abrasion or scratch, scabies |
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Term
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Definition
linear crack or break from the epidermis to the dermis
may be moist or dry
ex: athlete's foot, cracks at the corner of the mouth |
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Term
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Definition
loss of part of the epidermis; depressed, moist, glistening
follows rupture of a vesicle or bulla
ex: varicella, variola after rupture |
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Term
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Definition
loss of epidermis and dermis
concave, varies in size
ex: decubiti, stasis ulcers |
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Term
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Definition
dried serum, blood, or purulent exudates
slightly elevated, size varies; brown, red, black, tan or straw-colored
ex: scab on abrasion, eczema |
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Term
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Definition
thinning of skin surface and loss of skin markings
skin translucent and paper-like
ex: striae, aged skin |
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Term
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Definition
| an erythematous border surrounds lighter skin |
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Term
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Definition
| peeling or sloughing of skin |
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Term
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Definition
| hypertrophic stratum corneum |
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Term
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Definition
central umbilication or dimpling
ex: basal cell carcinoma |
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Term
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Definition
dilated blood vessels within lesion blanch completely, may be markers of systemic disease
ex: basal cell carcinoma, actinic keratosis |
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Term
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Definition
| round, active margins with central clearing |
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Term
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Definition
following a nerve or segment of the body
ex: herpes zoster |
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Term
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Definition
interlocking or coalesced circles (formed by enlargement of annular lesions)
ex: psoriases, urticaria |
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Term
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Definition
pink macules with purple central papules
ex: erythema multiforme |
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Term
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Definition
star-shaped
meningococcal septicemia |
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Term
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Definition
snakelike or wavy line track
ex: cutanea larva migrans |
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Term
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Definition
netlike or lacy
ex: polyarteritis nodosa, llichen planus lesions of erythema infectiosum |
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Term
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Definition
measles like: maculopapular lesions that become confluent on the face and body
ex: measles, roseola, drug eruptions |
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