Skin lesions Flashcards
which area is affected
distribution
how lesions are arranged
configuration
what the lesion looks like
morphology
small depressions of nail plate
pitting, common in psoriasis
separation of the nail plate from bed
onycholysis
general excess hair growth
hypertrichosis
excess hair growth in a male pattern
hirsutism
loss of hair
alopecia
ABCDEF
asymmetry, border, colour, diameter, elevation/evolution, features
purpura
extravasation of blood, will not blanche
1-2mm area of flat purpura
petechia
erythema
vascular dilation, blanches on pressure
macular rash
papular rash
maculopapular rash
flat
raised
flat and elevated
macule
<1cm, localised, flat, colour change
patch
> 1cm, localised, flat, colour change
papule
elevated area <0.5cm
nodule
elevated area >0.5cm
plaque
raised edge and flatter surface >1cm
pustule
pus filled
vesicle
<0.5cm filled with fluid
bulla
> 0.5cm filled with fluid
wheal
compressible dermal swelling
cyst
nodule containing semi-solid material
scale
accumulated fragments of keratin layer
crust
dried exudate
lichenified
thickening with increased skin markings
scar
normal tissue replaces by fibrous tissue
fissures
linear split in epidermis
erosion
superficial break in epidermis
ulcer
deep break into dermis
atrophy
loss of epidermis and sometimes dermis
discrete configuration
well demarcated
coalescing configuration
merging lesions forming larger areas
confluent configuration
no normal skin visible
grouped: linear or annular
line or circle