A plateau-like lesion elevated above the skin surface
plaque
A rounded or flat-topped plaque that is fleeting (evanesces), due to localized dermal edema
wheal
A circumscribed flat skin lesion without elevation or depression
Macule
A superficial, raised, solid lesions <0.5cm in diameter
Papule
Medical term for a bruise
ecchymosis
A cavity within the skin containing solid or semi-solid material
Cyst
Circumscribed superficial cavity of the skin that contains purulent exudate
Pustule
Circumscribed superficial cavity of the skin containing serous fluid or blood; <1cm
vesicle
Dried serum, blood or purulent exudate on the skin surface
Crust
Hypertrophic scar
Keloid
Desquamated flakes of stratum corneum, loose but adherent to the skin
Scale
Diminution or loss of some or all layers of the skin
Atrophy
Linear erosions in the skin caused by scratching
Excoriations
Heaviest organ in the body
Skin
Thin, avascular and most superficial layer of the skin
Epidermis
Brownish pigment, determined by genetics and increased by sunlight
melanin
Yellow skin pigment
Carotene
Yellowing of the skin from increased bilirubin
jaundice
A type of gland that produces sebum, or a fatty substance, onto the skin surface
sebaceous
Shape of a lesion described as "coin-like" with no central clearing
nummular
Shape of a lesions described as "ring-like" with a central clearing
Annular
Medical term for hair loss
alopecia
Bluish discoloration of the skin usually indicative of low tissue oxygenation
cyanosis
An inflamed hair follicle
furuncle
A raised, palpable lesion that is larger and usually deeper than a papule
nodule
Fatty tumor
lipoma
Small linear or serpiginous pathway in the epidermis caused by mites
burrow
red vascular lesion usually found on the skin
angioma
flat macular lesions larger than 1 cm
patch