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Diabetes Mellitus with Pretibial Capillaritis and Hemosiderin Pigmentation. Presented by Dr. John E. Rauschkolb and Dr. Gilbert H. Barnes.
J. W., a 19-year-old white woman diabetic, was first seen on Sept. 10, 1952, because of a mottled brown pigmentation of the legs of 15 months' duration. The eruption first appeared over the dorsa of the feet in the form of clusters of punctate, pin-head-sized red macules, which enlarged peripherally, becoming brown and later fading to lighter shades of brownish-yellow. There has been a bilateral, progressive spread of the eruption up the pretibial, lateral, and medial sides of the legs, sparing the posterior aspects entirely. Crops of new lesions have followed the same pattern, appearing first as grouped punctate red dots, which spread peripherally as the color changed to brown and brownish-yellow, with confluence of many adjacent lesions. Minor trauma has often been associated with the appearance of new lesions.