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Papule
A small solid elevation of the
skin less than 1 cm in diameter.
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Diffuse papular eruption - the ventrum of a dog with dermatophytosis
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Papules most often result from the local accumulation of
inflammatory cells. Cats and dogs with flea allergy dermatitis
commonly present with papules reflecting the inflammatory
response at the site of flea bites. Papules are also
commonly seen in canine pyoderma.
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Plaque
A large flatter elevation of the skin, sometimes formed
by papules coalescing. A common example is the
eosinophilc plaque seen in some cats with allergic skin
disease.
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Plaque on the forelimb of a dog with dermatophytosis
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