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| == Introduction == | | == Introduction == |
| Contact dermatitis is an '''inflammatory skin disease''' caused by contact of the skin with a chemical. | | Contact dermatitis is an '''inflammatory skin disease''' caused by contact of the skin with a chemical. |
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− | Irritants such as '''faeces or urine''', and '''chemicals''' such as acids, alkali, detergents, irritant plants, medications and home furnishings can all cause the condition. | + | Irritants such as '''faeces''' or '''urine''', and '''chemicals''' such as acids, alkali, detergents, irritant plants, medications and home furnishings can all cause the condition. |
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| In cats and dogs lesions usually occur on '''thinly-haired areas''' such as the skin of the ventral abdomen, feet, chest, eyelids and axillae. | | In cats and dogs lesions usually occur on '''thinly-haired areas''' such as the skin of the ventral abdomen, feet, chest, eyelids and axillae. |
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| == Clinical Signs == | | == Clinical Signs == |
− | The skin will appear erythematous with '''patches and papules and occasionally vesicles'''. Many lesions are also caused by self-trauma and include ulcers and crusts. Secondary bacterial infection can also occur. | + | The skin will appear erythematous with [[Skin Glossary - Pathology| patches and papules and occasionally vesicles]]. Many lesions are also caused by self-trauma and include ulcers and crusts. Secondary bacterial infection can also occur. |
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| Lesions will appear in typical sites such as those described above and relating to the causes e.g. if the allergy is to the carpet then a dog will have the signs on his abdomen and scrotum. | | Lesions will appear in typical sites such as those described above and relating to the causes e.g. if the allergy is to the carpet then a dog will have the signs on his abdomen and scrotum. |
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| {{review}} | | {{review}} |
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| [[Category:Type IV Hypersensitivity Diseases]] | | [[Category:Type IV Hypersensitivity Diseases]] |
| [[Category:Integumentary System - Hypersensitivity Reactions]] | | [[Category:Integumentary System - Hypersensitivity Reactions]] |
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| [[Category:Allergic Skin Diseases]] | | [[Category:Allergic Skin Diseases]] |
| [[Category:Expert Review]] | | [[Category:Expert Review]] |
− | [[Category:To Do - Review]]
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