Reactive perforating collagenosis

Keywords: Acquired perforating collagenosis, Central white rim, Dermoscopy, End-stage renal failure, Hyperpigmentation, Pigmented scaly halo, Reactive perforating collagenosis, Skin of colour, Yellowish-brown structureless centre

What is reactive perforating collagenosis?

Reactive perforating collagenosis is the most common type of primary perforating dermatosis. It is characterised by the transepithelial elimination of collagen from the dermis through the epidermis to the skin surface.

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Source: dermnetnz.org