Rash Flashcards
Macule
small
not palpable
<1 cm
Patch
> 1 cm
not palpable
Papule
superficial, elevated, <1cm
plaque
superficial, elevated, >1cm
Nodule
significant deep component, <1 cm
Tumour
significant deep component, >1 cm
Vesicle
small bubble, fluid-filled, usually superficial, <0.5 cm
Bulla
large, fluid-filled, can be superficial or deep, >0.5 cm
Pustule
pus-containing bubble
can be:
- follicular
- nonfollicular
Folliculitis
superficial, generally multiple
Furuncle
deeper form of folliculitis
Carbuncle (boil)
deeper, multiple follicles coalescing
cyst
a sac containing fluid or semisolid material (cells or cell products)
Wheals, hives
short-lived edematous, well circumscribed papules or plaques seen in urticaria
Burrow
small threadlike curvilinear papule - pathognomonic of scabies
Comedone
can be open/closed
Atrophy
thinning of epidermal/dermal tissue
hypertrophic scar
do not overgrow the original wound boundaries
keloids
extend beyond wound boundaries, more chronic
fibrosis/sclerosis
dermal scarring/thickening reactions
petechiae, purpura, ecchymosis
red cells outside the vessel walls; non-blanchable
Telangiectasis
dilated superficial dermal vessels
Milium
small superficial cyst containing keratin
Scale
accumulation/excess shedding of stratum corneum
means epidermis is involved
secondary lesions
appear as a result of alteration or evolution of a primary lesion
Crust
dried exudate on the skin surface
Excoriation
loss of skin due to scratching/picking
Lichenification
increase in skin lines/creases produced by chronic rubbing
Maceration
raw, moist, wet tissue
Fissure
linear crack in the skin; often very painful
erosion
superficial open wound, loss of epidermis or mucosa only
usually heals without scarring
Ulcer
deeper open wound with partial or complete loss of dermis or submucosa
usually heals with scarring
