Histopathological Coexistence of Extragenital Lichen Sclerosus and Morphea in a Single Lesion.

Lichen sclerosus (LS) and morphea are two infrequent inflammatory dermatoses of unknown etiology. LS is characterized by, polygonal, bluish-white, slightly elevated papules that coalesce into plaques, which become increasingly atrophic overtime.it mostly affects genitals, however, it can affect any site on the skin and mucosa. Morphea characterized by, erythematous to violaceous patches or plaque with a white, sclerotic center, and the outer edge of the lesions take on the characteristic violaceous ring. The overlapping clinical and histopathologic features of both LS and morphea in the same patient have led some to speculate that they may have a common pathologic link or that both conditions represent the same disease spectrum. The coexistence of LS and morphea in the same lesion is a rare finding. We present a patient, who was diagnosed with what appeared clinically to be extragenital LS, but with histopathologic features of both LS and morphea.