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Polymorphic light eruption on the arm
Polymorphic light eruption on the arm

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 to 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:
Polymorphous light eruption

Review Date: 1/3/2002
Reviewed By: Michael Lehrer, M.D., Department of Dermatology, University of Pennsylvania Medical Center, Philadelphia, PA. Review provided by VeriMed Healthcare Network.
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