reactive perforating collagenosis
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re·ac·tive per·fo·rat·ing col·lag·e·no·sis
a rare skin disorder characterized by extrusion of collagen fibers through the epidermis; usually begins in infancy or childhood and appears clinically as recurrent umbilicated papules that resolve spontaneously. The condition may be inherited or acquired; the latter is associated with diabetes and renal insufficiency and differs from Kyrle disease in that follicular involvement is absent.