Reactive perforating collagenosis

A rare skin disorder characterized by the transepidermal elimination of altered collagen through the epidermis.

Two forms exist: an inherited form that manifests in childhood and an acquired sporadic form that occurs in adulthood.

There are 4 primary perforating diseases: reactive perforating collagenosis, elastosis perforans serpiginosum, Kyrle disease, and perforating folliculitis.

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