derm Flashcards
macule
flat circumscribed skin discoloration
lacks surface elevation or depression
patch
large macule!
>2cm
papule
elevated and solid
5mm or less
(ex: wart)
plaque
elevated and solid
greater than 5 mm- lacks a deep component
confluence of papules
(ex: psoriasis)
nodule
elevated, deep and solid. greater than 5mm
firm! can be round or irregular
pustule
papule containing purulent material
wheal
firm edematous plaque that itches and vanishes
- rounded or flat topped edematous plaque
ex: hives
vesicle
papule that contains clear fluid
blister
patch
flat and large skin discoloration
cyst
nodule that contains fluid or semi-solid material
bullae
localized fluid collection greater than 5mm
-BIG vesicle
crust
2Nd- collection of cellular debris and blood. scab
erosion
2ND- partial focal loss of epidermis above the basal layer
ulcer
full thickness loss of epidermis and dermis
-heals with scaring
fissure
vertical and linear loss of both epidermis and dermis that is sharply defined
excoriation
linear erosion caused by scratching
scar
collection of new connective tissue
may be atrophic or hypertrophic
scale
collection of top layer skin cells caused by stickiness and proliferation
(ex:psoriasis, tinea versicolor)
how to describe
size+color+primary skin lesion+secondary skin lesion+ distribution
keratosis pilaris
common heredity disorder of the hair follicle on face, trunk, and arms/legs
-perifollicular hyperderatotic papules with occasional pustule
lichen planus
inflammatory disorder of unknown cause that affects all cutaneous surfaes- can itch or be painful
tumor
elevated solid >2cm diameter
Primary skin lesions
atrophy
2ND- skin depression resulting from thinned epidermis and or dermis
lichenification
skin thickening with papules, plaques, and skin line accentuation caused by rubbing or scratching
purpura
special skin lesion- non blanching circumscribed erythema or violaceous extravasation of bloos >0.5 cm in diameter
-bruise, throbocytopenic purpura
petechiae
pinpoint circular broken capillaries
telangiectasia
dilated superficial blood vessels
rosacea, actinic damage, basal cell carcinoma
xerosis
dry skin
hypertrichosis
abnormal hair growth
intertriginous distribution
lesions appearing within the skin folds(under boob, buttt, groin, pannus)
arciform configuration
partial circles
