Fungal infections are a common reason for canine nasal disease, and Aspergillus fumigatus is a frequent culprit. Dogs can pick up this fungus by digging in and exploring soil, wood chips, rotting vegetation, compost and hay.
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Affected Population
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Fungal nasal infection, called aspergillosis, is most likely in dogs who are 3 years old or younger, with medium or long noses.
Effects
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Nasal infections caused by Aspergillus fumigatus result in inflammation and erosion of nasal tissues. The fungus also is associated with lung disorders and development of allergies.
Symptoms
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The initial symptom is chronic nasal discharge. If the infection progresses, it leads to large amounts of pus-filled and bloody nasal discharge, and ulcerations on the outside of the nostrils. The dog may show signs of pain if his face is touched.
Localized vs. Systemic
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Although canine nasal aspergillosis may spread to the sinuses and ears, it is still considered a localized infection. The more serious systemic infection called disseminated aspergillosis is caused by the fungus Aspergillus tereus.
Treatment
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Treatment for infections caused by Aspergillus fumigatus include topical and systemic antifungal drugs.
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