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Severe crusting in a dog with scabies of several months duration
Crust
A dried exudate on the skin surface, either serum, blood or
pus or a combination.
Crusts are commonly seen in diseases with a pustular component
(eg canine pyoderma, pemphigus foliaceus), and where the exudate
from erosions and ulcers dries on the surface of the lesion.
