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 both, it may be useful to categorized these lesions as a distinct, yet encompassing process, termed b...

APD: acquired perforating dermatosis CRF: chronic renal failure DM: diabetes mellitus EPS: elastosis perforans serpiginosa ESRD: end-stage renal disease RPC: reactive perforating collagenosis INTRODUCTION Perforating dermatosis is a heterogeneous group of disorders characterized by transepidermal elimination of dermal components such as collagen, elastin, or fibrin. Acquired perforating dermato...

Linear morphea is a distinct form of morphea that occurs as a linear band usually with a single unilateral distribution. The lower extremities are most often involved. This dermatosis appears as a linear induration not necessarily related to the derm induration. We report herein a case of 20-year-old Iranian girl who had a linear sclerotic patch on right lower extremity with clinical and ...

Acquired reactive perforating collagenosis is a perforating dermatosis usually associated with different systemic diseases, mainly diabetes mellitus and/or chronic renal insufficiency. Different therapies have been tried but treatment is not standardized yet and remains a challenge. In the last few years, allopurinol has been reported as a good therapeutic option for acquired reactive perforati...

Acquired perforating collagenosis (APC) is a rare perforating dermatosis characterized by transepidermal collagen elimination. We describe a 65-year-old patient, with long-standing type 2 diabetes mellitus and a 2-year history of itchy hyperkeratotic nodules situated on the back, who was subsequently diagnosed with APC. Treatment included topical corticosteroids and antihistamines, without impr...

Acquired perforating dermatosis (APD) is an uncommon skin disorder seen in majority among patients with chronic kidney disease and also in those with diabetes mellitus. We present the clinicopathological features of APD in a 65-year-old patient with diabetes mellitus and end-stage kidney disease on hemodialysis and review the recent advances in the management of APD, as well as the mechanisms o...

Elastosis perforans serpiginosa is a rare, primary perforating dermatosis, frequently associated with certain genetic diseases and characterized by the transepidermal extrusion of elastic fibers. The present case report describes this dermatosis in a 19-year old female patient with Down's syndrome, who presented with asymptomatic erythematous, keratotic papules in an arciform pattern, located o...