Drexel University College of Medicine

Diseases and Conditions

Polymorphic light eruption

Definition

Polymorphic light eruption is a common reaction to sunlight (ultraviolet light) that occurs in light-sensitive individuals. Small red pimples and blisters appear on the skin within 1 - 4 days after exposure to sunlight.

They disappear within 2 weeks. The cause is unknown. Some experts think it is a type of delayed allergic reaction. Controlled ultraviolet light exposure may reduce some of the symptoms.

Alternative Names

References

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