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| − | *Usually involves [[Type IV Hypersensitivity|Type IV reaction]] not just [[Contact Dermatitis|contact dermatitis]]
| + | #redirect[[Contact Dermatitis]] |
| − | *Pruritic lesions with self-inflicted trauma
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| − | *At areas in contact with allergen
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| − | *Grossly:
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| − | **Erythema, papules, +/- vesicles, exudation -> crusts
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| − | **If chronic, lichenification, hyperpigmentation, alopecia
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| − | *Microscopically:
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| − | **Spongiotic superficial perivascular dermatitis
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| − | **Mononuclear cells
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| − | **If chronic, epidermal hyperplasia
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| − | **May involve [[Eosinophils|eosinophils]]
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| − | [[Category:Type IV Hypersensitivity Diseases]]
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| − | [[Category:Integumentary System - Hypersensitivity Reactions]]
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