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Dermatitis, Photoallergic
Photoallergic Contact Dermatitis; Photosensitive Contact Dermatitis; Contact Dermatitides, Photoallergic; Contact Dermatitides, Photosensitive; Contact Dermatitis, Photoallergic; Contact Dermatitis, Photosensitive; Dermatitides, Photoallergic
A delayed hypersensitivity involving the reaction between sunlight or other radiant energy source and a chemical substance to which the individual has been previously exposed and sensitized. It manifests as a papulovesicular, eczematous, or exudative dermatitis occurring chiefly on the light-exposed areas of the skin.