Perforating disorders in patients with chronic renal failure (CRF), diabetes mellitus (DM), or both, may resemble any or all of the four classic cutaneous perforating disorders. However, due to the highly variable and overlapping histologic appearance of the lesions in patients with CRF, DM, or
Reactive perforating collagenosis is a rare skin disease that is has a characteristic transepidermal elimination of altered collagen through the epidermis. It occurs in two forms: an inherited form in childhood that is very rare and an acquired form in adulthood, more commonly found in patients with