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| − | ===Atopy=== | + | ===[[Atopy]]=== |
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| − | *Involves [[Type I Hypersensitivity|Type I reaction]]
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| − | *Mainly causes pruritus
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| − | *Dogs - face rubbing and foot licking; secondary [[Bacterial skin infections - Pathology#Pyoderma|pyoderma]] or [[Skin Other - Pathology#Secondary seborrhea|seborrhea]]
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| − | *Cats - facial, ear or generalised pruritus, miliary dermatitis, [[Skin Other - Pathology#Eosinophilic granuloma|eosinophilic granuloma complex]], symmetric alopecia
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| − | *Horses - pruritic hea, pinnae, ventrum, legs, tailhead or recurrent [[Skin Glossary - Pathology|urticaria]]
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| − | *Lesions generally due to self-trauma
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| − | *Microscopically:
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| − | **Hyperplastic superficial perivascular dermatitis
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| − | **Mast cells, eosinophils, nonmetachromatic mononuclear cells
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| − | **Perivascular inflammation may be involved especially in horses
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| − | [[Category:Type I Hypersensitivity Diseases]]
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| − | [[Category:Integumentary System - Hypersensitivity Reactions]]
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