The development of a honey-colored crust over a thin-walled vesicle is characteristic of which infectious skin disorder?
a. Carbuncle
b. Scabies
c. Impetigo contagiosa
d. Pediculosis
ANS: C
An impetigo rash appears as an oozing, thin-roofed vesicle that rapidly grows and develops a honey-colored crust; crusts are easily removed, and new crusts appear; lesions heal in 1 to 2 weeks if allowed to dry. A carbuncle is a boil; a scabies rash may appear as small, scattered erythematous papules, concentrated in finger webs, axillae, wrist folds, umbilicus, groin, and genitals. Pediculosis causes a popular rash, minute hemorrhagic points, or black or reddish brown dots at the bases of hairs, depending on the type.
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