skin lesions Flashcards
annular
circular, begins in center and spread to periphery
confluent
lesions running together
“hives”
discrete
-distinct individual lesions
-separate
“acne”
gyrate
- spiral
- snake-like
linear
line/streak
zosteriform
linear arrangement along unilateral route
grouped
clusters of lesions
target
- concentric rings of color in lesions
- resembles iris of eye
polycyclic
- annular lesions grow together
- psoriasis
macule
-only color change
-flat
<1cm
patch
-macule >1cm
“cafe au lait”
“vitiligo”
nodule
-solid
-elevated
-hard or soft
>1cm
“xanthoma”
tumor
- larger than few cm in diameter
- firm or soft
- lipoma
papule
-solid, elevated >1 cm -thickening of skin "wart" "mole"
plaque
-plateaulike
-disk shaped lesion
-psoriasis
“lichen planus”
wheal
-raised
-irregular shape
“mosquito bite”
urticaria
“hives”
-wheals coalesce and form extensive rxn
vesicle
-elevated cavity with free fluid
“blister”
bulla
> 1cm
- single chambered
- rupture easily
- burns
cyst
- encapsulated fluid filling cavity
- largely elevated
- sebaceous cyst
pustule
-pus in cavity
-elevated
“acne”
crust
-dried out exudate when vesicles/pustules burst or dry up
“scab”
scale
-flakes of skin
-silvery/white
-compact
“eczema or dry skin”
fissure
-linear cracks with abrupt edges
-dry or moist
“cheilosis”
ulcer
- deeper depression into dermis
- irregular shape
erosion
- shallow scooped out depression
- superficial
- epidermis lost
excoriation
-self inflicted
-superficial
-intense scratching
insect bites
scar
- CT replacing lost tissue
- after surgery
- acne scars
lichenification
-prolonged intense scratching increase thickness of skin and tightly packed papules
atrophic scar
- resulting skin level depressed
- thinning of epidermis
- striae
keloid
- benign scar tissue beyond sites of original injury
- appears smooth
- rubbery, shiny, firm
- from burns/tattoos/surgery
- located ear lobes, back of neck, scalp, chest, back
