IT HAS long been our impression that the incidence of lichen simplex chronicus is exceedingly high among the comparatively few Chinese patients seen in our practice, as contrasted with the occurrence among our white patients. There is scant mention in the literature regarding this observation. In 1936, Cleveland1 analyzed 170 patients with lichen simplex chronicus in private practice. He states, "Although only 2.75 per cent of the total of 5,000 cases of diseases of the skin occurred in Orientals, 6.25 per cent of all the cases of lichen simplex occurred in Orientals." He felt that "the disease occurs more than twice as frequently in Orientals [Chinese and Japanese] as it does in members of the white race." Text-books and articles on tropical diseases make little mention of lichenified dermatitis among Orientals. The literature is equally sparse in discussing lichenified dermatitis among Orientals in their native lands. Keim,
REIN CR, SNIDER BL. LICHEN SIMPLEX CHRONICUS IN ORIENTALS. AMA Arch Derm Syphilol. 1952;66(5):612–617. doi:10.1001/archderm.1952.01530300068007
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