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Sun allergies - Polymorphous Light Eruption - Definition


An allergy to the sun is also called Polymorphous Light Eruption (PLE), and appears when the skin is exposed to the sun. It affects 10% of the population, mainly females. The skin is covered in small pimples or red patches, of the urticarial type, which is rarely found on the face and most often affects the torso and limbs. It can lead to itching, sometimes severe. Certain sun allergies result from prolonged or repeated exposure to the sun. In this case, it is important to avoid the sun for a few days and the symptoms normally disappear on their own within two weeks.