SKIN Flashcards
macule
primary lesion
flat, circumscribed
<1cm
papule
primary lesion
elevated lesion
< 1cm
patch
primary lesion
flat, circumscribed
>1cm
atopic dermatitis is a.k.a.
eczema
plaque
primary lesion
circumscribed, elevated
>1cm
nodule
primary lesion
circumscribed, elevated
usually solid
0.5-2cm
cyst
primary lesion
elevated, circumscribed
encapsulated, filled with liquid or semisolid material
vesicle
primary lesion
sharply circumscribed, elevated
fluid-containing lesion
<0.5cm
bulla
primary lesion
sharply circumscribed, elevated
fluid-containing lesion
<1.0cm
wheal
primary lesion
solid elevation
local, superficial, transient edema
blanches with pressure
e.g. insect bite
comedones
primary lesion
plugged secretions of horny material
can be open (black heads)
or closed (white heads)
burrows
primary lesion
linear lesion produced by tunneling
telangiectasia
primary lesion
fine irregular red lines produced by capillary dilation
scale
secondary lesion compact descquamation (come off in flakes) of stratum corneum
fissure
secondary lesion dry or moist linear often painful cleavage from epidermis to dermis
lichenification
secondary lesion
rough, thickened epidermis
secondary to itching, rubbing, or skin irritation
scar
secondary lesion
permanent fibrotic skin changes that follow damage to dermis
keloid
secondary lesion
scarring that tends to be beyond initially wounded area
crust
secondary lesion
dried exudate on epidermis
composed of serum, blood, or pus
erosions
secondary lesion
moist, slightly depressed vesicular lesion on which all or part of epidermis has been lost; may have surrounding erythema or edema
erythema
superficial skin reddening as a result of injury or irritation that causes dilation of capillaries
purpura
secondary lesion
flat lesion, may be palpable
petechiae if pinpoint
not blanchable
border
raised or indurated
OR
indistinct (e.g. cellulitis)
blaschko
linear lesions that do not follow known vascular, nervous, or lymphatic pattern
