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Skin Environmental - Pathology (view source)

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==Chemical damage==

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===Contact Dermatitis===

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===[[Contact Dermatitis]]===

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*Results due to exposure to chemicals (not immunologic reaction)

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**Acids, alkali, detergents, irritant plants ''etc.''

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*In cats and dogs lesions usually on skin of abdomen, feet, chest, eyelids, axillae

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*In horses lesions on muzzle, lower limbs, under tack

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*Grossly:

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**Erythematous [[Skin Glossary - Pathology|pathes and papules]]

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**Occasionally [[Skin Glossary - Pathology|vesicles]]

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**Lesions caused by self-trauma include [[Skin Glossary - Pathology|ulcers and crusts]]

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*Microscopically:

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**Hyperplastic, spongiotic dermatitis

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**Superficial perivascular inflammation

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**Necrosis may be caused by corrosive substances

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~~[[Category:Integumentary System - Chemical Damage]]~~

===Ergot poisoning===

*Caused by ingestion of grains or grass contaminated by fungus ''Claviceps purpurae''

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