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Lichen sclerosus (LS), first described by Breisky (1885) and Hallopeau (1887), is a chronic inflammatory skin disease which predominantly affects the anogenital region. 1,2 LS is relatively common in postmenopausal women, with an estimated prevalence between 1:1000 and 1:60. 3,4 In men, LS seems less common 5 ; the reported ratio between men and women varies from 1:10 to 1:6. 6,7 The disease is well-documented in adults; less is known regarding LS in children. In addition, many publications address LS in either boys or girls, but not both. Therefore, we aim to assess the literature on LS in both boys and girls. LS has been known by various synonyms such as white spot disease, kraurosis vulvae, lichen sclerosus et atrophicus vulvae or, in men, balanitis xerotica obliterans (BXO). For consistency, in this review, we uniformly use the term lichen sclerosus.

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