Coexistence of Genital and Extragenital LSA with Dermoscopic Features

Lichen sclerosus et atrophicus (LSA) is a chronic inflammatory dermatosis, primarily involving the anogenital region, and sometimes extragenital sites (15–20%). Rarely, patients can present with only extragenital lesions (2.5%). A 50-year-old female presented with depigmented lesions on vulva, bilateral knees and legs for 1½ years. Dermoscopy showed patchy white structureless areas with follicular plugs and histopathological examination revealed focal vacuolar degeneration of the basal layer and hyalinisation in the papillary dermis, with mild perivascular lymphohistiocytic inflammation, helping confirm the diagnosis of genital and extragenital LSA. Thus, the authors elaborate the rarity of coexistence of genital and extragenital LSA in a single patient and the use of dermoscopy as a tool in its diagnosis.