Acquired reactive perforating collagenosis:A rare association with dermatomyositis

Abstract

Acquired reactive perforating collagenosis (ARPC) presents with a number of umbilicated papules and nodules with central keratotic plugs on the trunk and extremities. Histopathology shows necrobiotic basophilic collagen bundles running transversely through the epidermis. ARPC is seen in association with various systemic disorders, in particular uncontrolled diabetes mellitus or renal failure (1). We describe here 2 patients with clinically amyopathic dermatomyositis, who developed ARPC on the back. © 2013 Acta Dermato-Venereologica.