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Clinical Signs
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Typical:
Some
animals show no clinical signs of infection but may carry
infective spores on the fur and skin. For the most part,
manifestation of infection result from penetration and
digestion of the non-viable, outer ("stratum corneum")
layer of skin, and hair by fungal elements, although some
strains can infect living tissue as well.
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There
are many different expressions of clinical infection
producing a host of skin and fur changes, none of which is
truly "typical".
The most common signs are:
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Broken and brittle hair
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Partial or patchy hair loss
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Scales or crusts:
primarily on the head and feet but lesions can appear
anywhere, or everywhere (generalized dermatophytosis)
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Multiple scales, swollen or ruptured follicles on the chin
and back:
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that
resemble lesions caused by flea and other allergies.
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Areas
of self-mutilation:
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one or
more areas where inflammation or itching are prevalent.
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