Reactive perforating collagenosis
Encyclopedia
Reactive perforating collagenosis is a rare, familial, nonpuritic skin disorder characterized by papules that grow in a diameter of 4 to 6mm and develop a central area of umbilication to which keratinous material is lodged. The etiology
of reactive perforating collagenosis is unknown.
Etiology
Etiology is the study of causation, or origination. The word is derived from the Greek , aitiologia, "giving a reason for" ....
of reactive perforating collagenosis is unknown.