Dermatology Flashcards
layers of the skin
epidermis, dermis, hypodermis
layers of the epidermis
corneum, lucidum, granulosum, spinosum, basale
ABCDEs of melanoma
Asymmetry, borders, color, diameter, evolution
macule
flat, non-palpable, < 1 cm in diameter
patch
flat, non-palpable, > 1 cm in diameter
papules
palpable, firm, < 1 cm in diameter, circumscribed
plaque
elevated, firm, palpable, > 1 cm in diameter
nodules
elevated, circumscribed, often > 1.5 cm in diameter, deep, can be compressible
tumor
large nodule, deeper in the dermis, > 2 cm in diameter,
wheal
irregular, transient, superficial edema
vesicles
elevated, well circumscribed, < 1 cm, fluid containing
bulla
elevated, well circumscribed, > 1 cm, filled with serous fluid
pustules
elevated, superficial, well circumscribed, filled with pus
furuncle
infection of a single hair follicle, s. aureus
carbuncle
infection of multiple hair follicles, s. aureus
crust
dried residue of serum, pus, or blood, adherent
scale
hyperkeratosis, accumulation of stratum corneum due to increased proliferation
fissure
linear cleft in skin
erosion
partial or complete loss of the epidermis
ulcer
deeper defect with loss of the entire epidermis plus superficial dermis
excortiations
exogenous injury to all or part of the epidermis
atrophy
thinning of the skin, can be epidermal or dermal
lichenification
thickening of the epidermis
petechiae
deep red, purple lesions, < 0.5 cm, non-blanchable