Otitis Externa

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5 Terms

1
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What are the predisposing causes of otitis?

Conformation and breed (stenotic or long canals)

Excessive moisture

Trauma

Canal obstruction

2
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What causes otitis?

Allergies is main

Also, keratinization, parasites, foreign bodies, autoimmune, juvenile cellulitis

3
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What are some perpetuating factores?

Bacteria, yeast, progressive pathologic changes

Otitis media

4
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What are some progressive pathologic changes that perpetuate otitis?

Hyperplasia, hyperkeratosis, thickened tissue

Fibrosis mineralization/calcification 

5
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What are the C/S of otitis?

Pinnal erythema, pruritus, pain, canal ulceration, discharge, odor, chronic ear canal changes, middle and inner ear infections