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of the epidermis

Pathophysiology:

■ Ultraviolet light is the causative agent but the mechanism is not known precisely.

References:

1. Boonstra HE, van Weelden H, Toonstra J, van Vloten WA. Polymorphous light eruption: a clinical, photobiologic, and follow-up study of 110 patients. J Am Acad Dermatol 2000; 42(2 Pt 1):199-207.

2. Mikhail M, Ackerman AB. Actinic prurigo; Hutchinson's summer prurigo, prurigo solare, and hereditary polymorphic light eruption of the American Indians. Dermatopathol Pract 10(3):3, available at www.derm101.com.

3. Stratigos AJ, Antoniou C, Papadakis P, et al. Juvenile spring eruption: clinicopathologic features and phototesting results in 4 cases. J Am Acad Dermatol 2004; 50:S57-S60.

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