title: Recurrent hyperkeratotic papules following superficial trauma. Reactive perforating collagenosis (RPC).
mesh_terms: D000328:Adult; D003095:Collagen Diseases / Q000175:diagnosis* / Q000209:etiology / Q000473:pathology; D006801:Humans; D008297:Male; D012008:Recurrence; D012867:Skin / Q000293:injuries* / Q000473:pathology; D012871:Skin Diseases / Q000175:diagnosis* / Q000209:etiology / Q000473:pathology