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Phytophotodermatitis
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''Photocontact dermatitis'' Toxic or allergic reaction when skin that has been exposed to certain chemicals gets exposed to sunlight. eg some sunscreen, coal tar, fragrance, insecticides Phototoxic - direct damage of cells by photo activated agent - looks like bad sunburn Photoallergic - cell mediated response where allergen is the light-activated agent - looks more like eczema but only in the exposed area ''Phytophotodermatitis'' A photocontact dermatitis where the agent comes from certain plants - eg Hogweed clinically blistering and swelling - may be minutes but more usually 48-72 hours post exposure, may leave behind postinflammatory hyperpigmentation (which may be only change observed) Management Avoid agent and sun exposure Cold compress Topical steroid - or oral steroids
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PigmentationPityriasis, note, slimindex