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Reactive perforating collagenosis
Hyperpigmented keratotic papules

Reactive perforating collagenosis

Hyperpigmented keratotic papules  


Keywords: Acquired perforating collagenosis, Dorsal hand, End-stage renal failure, Hyperpigmented keratotic papules, Hyperpigmented macules, Skin of colour



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