Korean J Dermatol.
2009 Mar;47(3):313-316.
A Case of Lichen Planus Pigmentosus Along the Lines of Blaschko
- Affiliations
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- 1Department of Dermatology, Yonsei University Wonju College of Medicine, Wonju, Korea. ahnsk@wonju.yonsei.ac.kr
- 2Department of Dermatology, Konyang UniversityCollege of Medicine1, Daejeon, Korea.
- 3Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
- 4Department of Dermatology, Soonchunhyang University College of Medicine, Bucheon, Korea.
Abstract
- Lichen planus pigmentosus (LPP) is an uncommon variant of lichen planus that presents clinically as hyperpigmented, dark brown macules or patches in sun-exposed areas and flexural folds. LPP has been described previously as a pigmented form of actinic lichen planus or as erythema dyschromicum perstans. Recently, however, these diseases have been recognized as different clinical entities. Histopathologically, in atrophic epidermis, vacuolar alteration of the basal cell layer and scarce lymphohistiocytic lichenoid infiltration and pigment incontinence are seen. Herein, we report a case of LPP that developed in a unilateral linear pattern, probably in relation to Blaschko's lines.
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