In 1940 Montgomrey and Hill1in their classic article on lichen sclerosus et atrophicus reviewed the clinical and histologic features of this disease. Their observations were based on a study of 46 cases. They found that confusion had probably resulted, first, because of the close similarity of the cutaneous pictures of lichen sclerosus et atrophicus and some examples of morphea guttata and, secondly, because a histologic picture for lichen sclerosus et atrophicus distinct from that of morphea and from that of atrophic lichen planus had not generally been recognized. In 2 of their cases there were infiltrative plaques suggestive of local scleroderma. In 1 of their cases there were multiple infiltrated plaques simulating those of an edematous stage of morphea but with characteristic keratotic plugs clinically and histologically. The clinical features of lichen sclerosus et atrophicus1are so well known that they do not require repetition. It