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Polymorphous light eruption
Polymorphic light eruption is a common reaction to sunlight (ultraviolet light) that occurs in light-sensitive individuals.
The cause is unknown. Some experts think it is a type of delayed allergic reaction.
Lebwohl MG, Heymann WR, Berth-Jones J, Coulson I, eds. Treatment of Skin Disease: Comprehensive Therapeutic Strategies. 3rd ed. Philadelphia, Pa: Saunders Elsevier; 2009.
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